1. Leptospira Collection, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
2. WHO Collaborating Center for Leptospirosis, Oswaldo Cruz Foundation, Pavilhão Rocha Lima, 302 Manguinhos, Rio de Janeiro 21040-360, Brazil
3. School of Biological Sciences, University of Liverpool, Liverpool L69 7ZB, UK
4. Universidade Federal do Rio de Janeiro, CCS, Bloco I, 2° andar, Laboratório de Biologia de Anaeróbios, Rio de Janeiro 20941-901, Brazil