*Laboratório de Virologia (LIMHC), Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, Brazil
†Faculty of Infectious and Tropical Diseases, Clinical Research Department (CRD), London School of Hygiene and Tropical Medicine, London, United Kingdom
Supported by the Conselho Nacional de Desenvolvimento Científico e Technológico, an agency of the Brazilian Ministry of Science and Technology (Grants 304879/2003-7, 305258/2006-0, and 473867/2006-0). The study among Mapuera populations was supported by grants from the Welcome Trust (Grant 075454/B/04/Z), CNPq 300317/97-2, and Fundação Faculdade de Medicina, University of São Paulo, São Paulo, Brazil. Additional financial support was provided by the UK Department for International Development–funded Research Programme Consortium on Research and Capacity Building on Sexual and Reproductive Health and HIV in Developing Countries of the LSHTM.
The author has no funding or conflicts of interest to disclose.