1. Infectious Diseases Department, Hospital Federal dos Servidores do Estado, Rio de Janeiro, Brazil
2. Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
3. Maternity-Fetal Department and Infectious Diseases Department, Hospital Federal dos Servidores do Estado, Rio de Janeiro, Brazil
4. Department of Pediatric Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, California, USA