1. Hospital Geral Roberto Santos, Secretaria Estadual da Saúde da Bahia, Salvador, Brazil.
2. Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Brazil.
3. Seção de Arbovirologia e Febres Hemorrágicas, Instituto Evandro Chagas/SVS/MS, Ananindeua, Brazil.
4. Center for Tropical Diseases, University of Texas Medical Branch, Galveston, Texas.
5. Department of Pathology, Center for Biodefense and Emerging Infectious Diseases, Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas.
6. Hospital São Rafael, Fundação Monte Tabor, Salvador, Brazil.
7. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut.