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Revista do Instituto de Medicina Tropical de São Paulo

On-line version ISSN 1678-9946


ROMERO, Eliete Caló; BERNARDO, Carla Cristiane da Motta  and  YASUDA, Paulo H.. Human leptospirosis: a twenty-nine-year serological study in São Paulo, Brazil. Rev. Inst. Med. trop. S. Paulo [online]. 2003, vol.45, n.5, pp.245-248. ISSN 1678-9946.

A retrospective study of 9,335 cases of human leptospirosis in the state of São Paulo, Brazil, diagnosed between 1969 and 1997 showed that the disease is endemic throughout the state. Middle-aged adults, with a range of 20-39 years, were most frequently infected (32.40%). The mean annual incidence was 0.53 per 100,000 population and the disease was more frequent in males (87.0%). Cases occurred mainly in January to April each year. A peak was observed in 1991 and 1996 which rainfall average was 159.9 and 160.3, respectively. These data emphasize the potential public health importance of leptospirosis in the state of São Paulo, Brazil.

Keywords : Human leptospirosis; Epidemiology; Serology; Brazil.

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