1. From Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Sáude; Instituto da Saúde Coletiva and Faculdade de Medicina da Bahia, Universidade Federal da Bahia; and Hospital Geral Roberto Santos, Secretaria Estadual da Saúde da Bahia, Salvador BA, Brazil; Institute for Human Infections and Immunity, and Department of Microbiology and Immunology, Department of Pathology, and The University of Texas Medical Branch, Galveston, Texas;
2. and Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut.