1. Department of Bacteriology, Instituto Adolfo Lutz, Av. Dr Arnaldo, 351/355, 9 andar, CEP 01246-902 São Paulo, SP, Brazil
2. Department of Microbiology, Immunology and Parasitology, Universidade Federal de Sao Paulo, Sao Paulo, SP, Brazil
3. Department of Clinical Analysis, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
4. Department of Preventive Veterinary Medicine, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
5. Department of Veterinary Medicine, Universidade Federal do Parana, Curitiba, Parana, Brazil
6. Department of Bacteriology, Laboratorio Central de Saude Publica, Curitiba, Parana, Brazil