Seroprevalence of and risk factors for leptospirosis in the City of Manaus, State of Amazonas, Brazil.
BACKGROUND
Leptospirosis is caused by a bacterium of the genus Leptospira. This study aimed at investigating the seroprevalence of and risk factors for leptospirosis in humans in Manaus, State of Amazonas.


METHODS
Interviews were performed, and 1,000 blood serum samples were examined using a microscopic agglutination test.


RESULTS
Forty-three cases were positive; there were 10 serotypes, with coagglutination in 8 cases. The most frequently occurring serotypes were Icterohaemorrhagiae (20.7%), Cynopteri (20.7%), Australis (18.8%), and Copenhageni (16.9%), and the Midwest (54.7%) and South (23.8%) had the most cases; these areas lack basic sanitation.


CONCLUSIONS
Disease occurrence might be reduced through improved basic infrastructural conditions.
Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Instituto Leônidas e Maria Deane, Manaus, Amazonas, Brazil.
Luciete Almeida
LA
Silva
Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Instituto Leônidas e Maria Deane, Manaus, Amazonas, Brazil.
Kátia Maria da Silva
KM
Lima
Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Instituto Leônidas e Maria Deane, Manaus, Amazonas, Brazil.
Ormezinda Celeste Cristo
OC
Fernandes
Laboratório de Referência Nacional para Leptospirose, Instituto Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil.
Ilana Teruszkin
IT
Balassiano
Laboratório de Referência Nacional para Leptospirose, Instituto Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil.
Kátia Eliane Santos
KE
Avelar
Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Instituto Leônidas e Maria Deane, Manaus, Amazonas, Brazil.
Michele Silva de
MS
Jesus
D000328:Adult; D000372:Agglutination Tests; D000907:Antibodies, Bacterial / Q000097:blood*; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006801:Humans; D007919:Leptospira / Q000145:classification / Q000276:immunology*; D007922:Leptospirosis / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D012959:Socioeconomic Factors; D055815:Young Adult
D000907:Antibodies, Bacterial