المؤلفون: Molatlhegi, RP, Liebenberg, LJ, Leslie, A, Noel-Romas, L, Mabhula, A, Mchunu, N, Perner, M, Birse, K, Ngcapu, S, Adamson, JH, Govender, K, Garrett, NJ, Samsunder, N, Burgener, AD, Karim, SSA, Karim, QA, Passmore, JAS, McKinnon, LR

المصدر: Mucosal immunology. 13(3):449-459

مصطلحات موضوعية: Medicin och hälsovetenskap

URL الوصول: http://kipublications.ki.se/Default.aspx?queryparsed=id:142813696

المؤلفون: Molatlhegi, RP, Liebenberg, LJ, Leslie, A, Noel-Romas, L, Mabhula, A, Perner, M, Birse, K, Ngcapu, S, Tlou, B, Adamson, JH, Govender, K, Garrett, NJ, Samsunder, N, Burgener, AD, Karim, SSA, Karim, QA, Passmore, JAS, McKinnon, LR

المصدر: JOURNAL OF THE INTERNATIONAL AIDS SOCIETY. 22:68-69

مصطلحات موضوعية: Medicin och hälsovetenskap

URL الوصول: http://kipublications.ki.se/Default.aspx?queryparsed=id:141456918

المؤلفون: Garrett, NJ, Lattimore, S, Gilbart, VL, Aghaizu, A, Mensah, G, Tosswill, J, Murphy, G, Delpech, V

المصدر: HIV Medicine; Aug2012, Vol. 13 Issue 7, p444-447, 4p

مصطلحات موضوعية: INFECTION, HIV infections, MEDICAL practice, MEDICAL societies, ONLINE information services, PHYSICIANS, QUESTIONNAIRES, SURVEYS, CONTACT tracing, DIAGNOSIS

مصطلحات جغرافية: UNITED Kingdom, NORTHERN Ireland

المؤلفون: Scheepers C; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Kgagudi P; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Mzindle N; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Gray ES; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa., Moyo-Gwete T; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Lambson BE; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Oosthuysen B; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Mabvakure B; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa., Garrett NJ; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal, South Africa., Abdool Karim SS; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal, South Africa.; Department of Epidemiology, Columbia University, New York City, New York, United States of America., Morris L; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa.; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal, South Africa., Moore PL; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa.; SA MRC Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa.; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal, South Africa.; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.

المصدر: PLoS pathogens [PLoS Pathog] 2022 Sep 02; Vol. 18 (9), pp. e1010450. Date of Electronic Publication: 2022 Sep 02 (Print Publication: 2022).

نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't; Research Support, N.I.H., Extramural

بيانات الدورية: Publisher: Public Library of Science Country of Publication: United States NLM ID: 101238921 Publication Model: eCollection Cited Medium: Internet ISSN: 1553-7374 (Electronic) Linking ISSN: 15537366 NLM ISO Abbreviation: PLoS Pathog Subsets: MEDLINE

مواضيع طبية MeSH: AIDS Vaccines* , HIV Infections* , HIV-1*, Amino Acids ; Antibodies, Monoclonal ; Antibodies, Neutralizing ; Broadly Neutralizing Antibodies ; Epitopes/chemistry ; Epitopes/genetics ; HIV Antibodies ; HIV Envelope Protein gp41 ; Humans ; Solvents

المؤلفون: Ngcobo S; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa., Molatlhegi RP; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa., Osman F; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa., Ngcapu S; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa., Samsunder N; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa., Garrett NJ; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa., Abdool Karim SS; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Department of Epidemiology, Columbia University, New York, NY, USA., Abdool Karim Q; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Department of Epidemiology, Columbia University, New York, NY, USA., McKinnon LR; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa.; Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada.; Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya., Sivro A; Centre for the AIDS Programme of Research in South Africa (CAPRISA), 719 Umbilo Road, Durban, South Africa. aida.sivro@caprisa.org.; Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa. aida.sivro@caprisa.org.

المصدر: Scientific reports [Sci Rep] 2022 Feb 14; Vol. 12 (1), pp. 2437. Date of Electronic Publication: 2022 Feb 14.

نوع المنشور: Clinical Trial, Phase II; Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't

بيانات الدورية: Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE

مواضيع طبية MeSH: Disease Progression*, Anti-HIV Agents/*therapeutic use , Chemokines/*blood , HIV Infections/*blood , HIV Infections/*prevention & control , HIV-1/*immunology , Tenofovir/*therapeutic use, Adolescent ; Adult ; Biomarkers/blood ; CD4-CD8 Ratio ; Cohort Studies ; Double-Blind Method ; Female ; HIV Infections/epidemiology ; HIV Infections/immunology ; HIV Seropositivity ; Humans ; Immunity ; Prognosis ; South Africa/epidemiology ; Treatment Outcome ; Viral Load ; Young Adult

المؤلفون: Ismail SD; Division of Medical Virology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa., Riou C; Division of Medical Virology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town,South Africa., Joseph SB; Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA., Archin NM; Department of Medicine and UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina,USA., Margolis DM; Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.; Department of Medicine and UNC HIV Cure Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina,USA., Perelson AS; Theoretical Biology and Biophysics Group, MS K710, Los Alamos National Laboratory, Los Alamos, New Mexico, USA., Cassidy T; Theoretical Biology and Biophysics Group, MS K710, Los Alamos National Laboratory, Los Alamos, New Mexico, USA., Abrahams MR; Division of Medical Virology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa., Moeser M; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA., Council OD; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA., McKinnon LR; Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.; Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Manitoba, Canada., Osman F; Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa., Karim QA; Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA., Abdool Karim SS; Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA., Swanstrom R; Department of Microbiology & Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.; Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA., Williamson C; Division of Medical Virology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town,South Africa.; Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa., Garrett NJ; Centre for the AIDS Programme of Research in South Africa, University of KwaZulu-Natal, Durban, South Africa.; Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa., Burgers WA; Division of Medical Virology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town,South Africa.

المصدر: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America [Clin Infect Dis] 2021 Oct 20; Vol. 73 (8), pp. 1528-1531.

نوع المنشور: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.

بيانات الدورية: Publisher: Oxford University Press Country of Publication: United States NLM ID: 9203213 Publication Model: Print Cited Medium: Internet ISSN: 1537-6591 (Electronic) Linking ISSN: 10584838 NLM ISO Abbreviation: Clin Infect Dis Subsets: MEDLINE

مواضيع طبية MeSH: HIV Infections*/drug therapy , HIV-1*, Anti-Retroviral Agents/therapeutic use ; CD4-Positive T-Lymphocytes ; Humans ; Viral Load ; Virus Latency ; Virus Replication

المؤلفون: Scheepers C; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa., Bekker V; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa., Anthony C; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa., Richardson SI; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa., Oosthuysen B; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa., Moyo T; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa., Kgagudi P; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa., Kitchin D; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa., Nonyane M; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa., York T; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa., Mielke D; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa., Mabvakure BM; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa., Sheng Z; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA; Zuckerman Brain Mind Behaviour Institute, Columbia University, New York, NY 10027, USA., Lambson BE; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa., Ismail A; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa., Garrett NJ; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa., Abdool Karim SS; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa; Department of Epidemiology, Columbia University, New York, NY 10032, USA., Shapiro L; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA; Zuckerman Brain Mind Behaviour Institute, Columbia University, New York, NY 10027, USA., Williamson C; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa., Morris L; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa. Electronic address: lynnm@nicd.ac.za., Moore PL; Centre for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Antibody Immunity Research Unit, School of Pathology, University of the Witwatersrand, Johannesburg 2050, South Africa; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7701, South Africa; Centre for the AIDS Programme of Research in South Africa (CAPRISA), KwaZulu-Natal 4013, South Africa. Electronic address: pennym@nicd.ac.za.

المصدر: Cell reports [Cell Rep] 2020 Nov 24; Vol. 33 (8), pp. 108430.

نوع المنشور: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't

بيانات الدورية: Publisher: Cell Press Country of Publication: United States NLM ID: 101573691 Publication Model: Print Cited Medium: Internet ISSN: 2211-1247 (Electronic) NLM ISO Abbreviation: Cell Rep Subsets: MEDLINE

مواضيع طبية MeSH: HIV-1/*immunology , Immunoglobulin Class Switching/*immunology , Neutralization Tests/*methods, Humans

المؤلفون: Tinarwo P; School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa. partsont@gmail.com., Zewotir T; School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa., Yende-Zuma N; Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa., Garrett NJ; Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa., North D; School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa.

المصدر: Infectious diseases and therapy [Infect Dis Ther] 2019 Jun; Vol. 8 (2), pp. 269-284. Date of Electronic Publication: 2019 Feb 12.

نوع المنشور: Journal Article

بيانات الدورية: Publisher: Adis Country of Publication: New Zealand NLM ID: 101634499 Publication Model: Print-Electronic Cited Medium: Print ISSN: 2193-8229 (Print) Linking ISSN: 21936382 NLM ISO Abbreviation: Infect Dis Ther Subsets: PubMed not MEDLINE

المؤلفون: Pacini CE; Wellcome Trust Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, CB2 1QN, UK.; Department of Zoology, University of Cambridge, Cambridge, CB3 3EJ, UK., Bradshaw CR; Wellcome Trust Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, CB2 1QN, UK., Garrett NJ; Wellcome Trust Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, CB2 1QN, UK.; Department of Zoology, University of Cambridge, Cambridge, CB3 3EJ, UK., Koziol MJ; Wellcome Trust Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, CB2 1QN, UK. mjk39@cam.ac.uk.; Department of Zoology, University of Cambridge, Cambridge, CB3 3EJ, UK. mjk39@cam.ac.uk.

المصدر: Scientific reports [Sci Rep] 2019 Mar 26; Vol. 9 (1), pp. 5185. Date of Electronic Publication: 2019 Mar 26.

نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't

بيانات الدورية: Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE

مواضيع طبية MeSH: Genome, Human*, DNA Methylation/*genetics , Deoxyadenosines/*metabolism, Cell Line ; Chromosomes, Human/metabolism ; Humans ; Transcription, Genetic

المؤلفون: Tanko RF; Institute of Infectious Disease and Molecular Medicine and Department of Pathology, Division of Medical Virology, Faculty of Health Sciences, University of Cape Town, South Africa., Soares AP; Institute of Infectious Disease and Molecular Medicine and Department of Pathology, Division of Medical Virology, Faculty of Health Sciences, University of Cape Town, South Africa., Masson L; Institute of Infectious Disease and Molecular Medicine and Department of Pathology, Division of Medical Virology, Faculty of Health Sciences, University of Cape Town, South Africa; Centre for the AIDS Program of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa., Garrett NJ; Centre for the AIDS Program of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa., Samsunder N; Centre for the AIDS Program of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa., Abdool Karim Q; Centre for the AIDS Program of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States., Abdool Karim SS; Centre for the AIDS Program of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States., Riou C; Institute of Infectious Disease and Molecular Medicine and Department of Pathology, Division of Medical Virology, Faculty of Health Sciences, University of Cape Town, South Africa., Burgers WA; Institute of Infectious Disease and Molecular Medicine and Department of Pathology, Division of Medical Virology, Faculty of Health Sciences, University of Cape Town, South Africa. Electronic address: wendy.burgers@uct.ac.za.

المصدر: Clinical immunology (Orlando, Fla.) [Clin Immunol] 2018 Oct; Vol. 195, pp. 127-138. Date of Electronic Publication: 2018 Jun 05.

نوع المنشور: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.

بيانات الدورية: Publisher: Academic Press Country of Publication: United States NLM ID: 100883537 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1521-7035 (Electronic) Linking ISSN: 15216616 NLM ISO Abbreviation: Clin Immunol Subsets: MEDLINE

مواضيع طبية MeSH: CD8-Positive T-Lymphocytes/*immunology , HIV Infections/*immunology , HIV-1/*physiology, Adult ; Antibodies, Viral/blood ; Antiretroviral Therapy, Highly Active ; Cell Differentiation ; Female ; Flow Cytometry ; HIV Infections/drug therapy ; Humans ; Immunologic Memory ; Immunophenotyping ; Lymphocyte Activation ; South Africa ; Viral Load