1. Infection Control Team; University of São Paulo; São Paulo Brazil
2. Department of Infectious Diseases; and; University of São Paulo; São Paulo Brazil
3. Liver and Intestinal Transplant Division, Department of Gastroenterology, School of Medicine; University of São Paulo; São Paulo Brazil
4. Microbiology Research Laboratory; University of São Paulo; São Paulo Brazil
5. Microbiology Laboratory, Hospital das Clínicas, and; University of São Paulo; São Paulo Brazil