1. Molecular Virology and Parasitology Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, 4365 Brasil Ave., Manguinhos, Rio de Janeiro CEP 21040-360, Brazil
2. Social Medicine Department, Federal University of Espírito Santo, Espirito Santo CEP 2975-910, Brazil
3. Pathology Laboratory, Oswaldo Cruz Foundation, 4365 Brasil Ave., Manguinhos, Rio de Janeiro CEP 21040-360, Brazil
4. Stomatology Department, Dentistry School, University of São Paulo, São Paulo CEP 05508-000, Brazil
5. Virology Laboratory, Tropical Medicine Institute of São Paulo, Medical School, University of São Paulo, São Paulo CEP 05508-000, Brazil