Human leptospirosis: a twenty-nine-year serological study in São Paulo, Brazil

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 w...

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Bibliographic Details
Published in:Revista do Instituto de Medicina Tropical de São Paulo 2003-10, Vol.45 (5), p.245-248
Main Authors: Romero, Eliete Caló, Bernardo, Carla Cristiane da Motta, Yasuda, Paulo H
Format: Article
Language:English
Subjects:
Adolescent
Adult
Brazil
Brazil - epidemiology
Child
Child, Preschool
Endemic Diseases - statistics & numerical data
Epidemiology
Female
Human leptospirosis
Humans
Incidence
Infant
Infant, Newborn
Leptospirosis - epidemiology
Male
Middle Aged
Retrospective Studies
Seroepidemiologic Studies
Serology
TROPICAL MEDICINE
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Summary: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.
ISSN:0036-4665
1678-9946
0036-4665
1678-9946
DOI:10.1590/s0036-46652003000500002