دورية أكاديمية
Feasibility of feeding Aedes aegypti mosquitoes on dengue virus-infected human volunteers for vector competence studies in Iquitos, Peru.
| العنوان: | Feasibility of feeding Aedes aegypti mosquitoes on dengue virus-infected human volunteers for vector competence studies in Iquitos, Peru. |
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| المؤلفون: | Kanya C Long, Juan Sulca, Isabel Bazan, Helvio Astete, Hugo L Jaba, Crystyan Siles, Claudine Kocher, Stalin Vilcarromero, Julia Schwarz, Karin S Escobedo-Vargas, Fanny Castro-Llanos, Leslye Angulo, Guadalupe Flores, Cesar Ramal-Asayag, Eric S Halsey, Robert D Hontz, Valerie A Paz-Soldan, Thomas W Scott, Louis Lambrechts, Amy C Morrison |
| المصدر: | PLoS Neglected Tropical Diseases, Vol 13, Iss 2, p e0007116 (2019) |
| بيانات النشر: | Public Library of Science (PLoS), 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Arctic medicine. Tropical medicine LCC:Public aspects of medicine |
| مصطلحات موضوعية: | Arctic medicine. Tropical medicine, RC955-962, Public aspects of medicine, RA1-1270 |
| الوصف: | BACKGROUND:Transmission of dengue virus (DENV) from humans to mosquitoes represents a critical component of dengue epidemiology. Examinations of this process have generally been hampered by a lack of methods that adequately represent natural acquisition of DENV by mosquitoes from humans. In this study, we assessed artificial and natural blood feeding methods based on rates of DENV infection and dissemination within mosquitoes for use in a field-based epidemiological cohort study in Iquitos, Peru. METHODOLOGY/PRINCIPAL FINDINGS:Our study was implemented, stepwise, between 2011 and 2015. Participants who were 5 years and older with 5 or fewer days of fever were enrolled from ongoing clinic- and neighborhood-based studies on dengue in Iquitos. Wild type, laboratory-reared Aedes aegypti were fed directly on febrile individuals or on blood collected from participants that was either untreated or treated with EDTA. Mosquitoes were tested after approximately 14 days of extrinsic incubation for DENV infection and dissemination. A total of 58 participants, with viremias ranging from 1.3 × 10(2) to 2.9 × 10(6) focus-forming units per mL of serum, participated in one or more feeding methods. DENV infection and dissemination rates were not significantly different following direct and indirect-EDTA feeding; however, they were significantly lower for mosquitoes that fed indirectly on blood with no additive. Relative to direct feeding, infection rates showed greater variation following indirect-EDTA than indirect-no additive feeding. Dissemination rates were similar across all feeding methods. No differences were detected in DENV infection or dissemination rates in mosquitoes fed directly on participants with different dengue illness severity. CONCLUSIONS/SIGNIFICANCE:Our study demonstrates the feasibility of using direct and indirect feeding methods for field-based studies on vector competence. Direct mosquito feeding is preferable in terms of logistical ease, biosecurity, and reliability. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1935-2727 1935-2735 |
| Relation: | http://europepmc.org/articles/PMC6388938?pdf=render; https://doaj.org/toc/1935-2727; https://doaj.org/toc/1935-2735 |
| DOI: | 10.1371/journal.pntd.0007116 |
| URL الوصول: | https://doaj.org/article/163e41f8c7064868ad9017dbd9ca4e9b |
| رقم الأكسشن: | edsdoj.163e41f8c7064868ad9017dbd9ca4e9b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19352727 19352735 |
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| DOI: | 10.1371/journal.pntd.0007116 |