المؤلفون: Simonovich VA; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Burgos Pratx LD; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Scibona P; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Beruto MV; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Vallone MG; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Vázquez C; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Savoy N; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Giunta DH; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Pérez LG; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Sánchez MDL; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Gamarnik AV; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Ojeda DS; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Santoro DM; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Camino PJ; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Antelo S; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Rainero K; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Vidiella GP; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Miyazaki EA; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Cornistein W; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Trabadelo OA; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Ross FM; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Spotti M; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Funtowicz G; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Scordo WE; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Losso MH; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Ferniot I; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Pardo PE; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Rodriguez E; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Rucci P; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Pasquali J; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Fuentes NA; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Esperatti M; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Speroni GA; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Nannini EC; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Matteaccio A; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Michelangelo HG; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Follmann D; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Lane HC; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD., Belloso WH; From the Clinical Pharmacology Section (V.A.S., P.S., M.V.B., N.S.), Intermediate Care Unit (M.G.V., C.V., H.G.M.), and Infectious Diseases Section (M.L.S.), Department of Internal Medicine, and the Departments of Research (V.A.S., D.H.G., L.G.P., W.H.B.) and Transfusional Medicine (L.D.B.P., D.M.S., P.J.C., S.A.), Hospital Italiano de Buenos Aires, Buenos Aires; Department of Virology, Leloir Institute Foundation, Buenos Aires (A.V.G., D.S.O.), the Departments of Transfusional Medicine (K.R.), Infectious Diseases, Sanatorio Agote (G.P.V.), and Critical Care, Clínica Zabala (E.A.M.), Swiss Medical, Buenos Aires, the Departments of Infection Control (W.C.) and Transfusional Medicine (O.A.T.), Hospital Universitario Austral, Pilar, the Departments of Internal Medicine (F.M.R.) and Transfusional Medicine (M.S.), Clínica Santa Isabel, Buenos Aires, the Departments of Emergency and Internal Medicine (L.D.B.P., G.F.) and Transfusional Medicine (W.E.S.), Hospital Italiano Agustín Rocca, San Justo, the Departments of Medicine (M.H.L.) and Transfusional Medicine (I.F.), Hospital General de Agudos José María Ramos Mejía, Buenos Aires, the Departments of Internal Medicine (P.E.P.) and Transfusional Medicine (E.R.), Sanatorio Trinidad de Palermo, Buenos Aires, the Departments of Clinical Research (N.A.F., M.E.) and Transfusional Medicine (G.A.S.), Hospital Privado de la Comunidad de Mar del Plata and Escuela Superior de Medicina Universidad Nacional de Mar del Plata, Mar del Plata (N.A.F., M.E.), the Departments of Internal Medicine (P.R.) and Transfusional Medicine (J.P.), Hospital Zonal Ramón Carrillo, Bariloche, and the Departments of Infectious Diseases (E.C.N.) and Transfusional Medicine (A.M.), Sanatorio Británico de Rosario, Santa Fé - all in Argentina; and the Biostatistics Research Branch (D.F.), Division of Clinical Research (D.F., H.C.L.), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD.

مؤلفون مشاركون: PlasmAr Study Group

المصدر: The New England journal of medicine [N Engl J Med] 2021 Feb 18; Vol. 384 (7), pp. 619-629. Date of Electronic Publication: 2020 Nov 24.

نوع المنشور: Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

بيانات الدورية: Publisher: Massachusetts Medical Society Country of Publication: United States NLM ID: 0255562 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1533-4406 (Electronic) Linking ISSN: 00284793 NLM ISO Abbreviation: N Engl J Med Subsets: MEDLINE

مواضيع طبية MeSH: Antibodies, Neutralizing/*blood , COVID-19/*therapy , Immunoglobulin G/*blood , Pneumonia, Viral/*therapy , SARS-CoV-2/*immunology, Aged ; Aged, 80 and over ; Blood Component Transfusion ; COVID-19/complications ; COVID-19/mortality ; Disease Progression ; Double-Blind Method ; Female ; Hospitalization ; Humans ; Immunization, Passive ; Kaplan-Meier Estimate ; Male ; Middle Aged ; Pneumonia, Viral/etiology ; Pneumonia, Viral/mortality ; Severity of Illness Index ; COVID-19 Serotherapy