1. Department of Infectious and Parasitic Diseases; University of São Paulo School of Medicine; Hospital das Clínicas; São Paulo Brazil
2. Virology Laboratory; São Paulo Institute of Tropical Medicine; University of São Paulo; São Paulo Brazil
3. Department of Pathology; University of São Paulo School of Medicine; São Paulo Brazil
4. Renal Transplant Division; University of São Paulo School of Medicine Hospital das Clínicas; São Paulo Brazil