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https://www.arca.fiocruz.br/handle/icict/19396
PERIDOMESTIC RISK FACTORS FOR CANINE LEISHMANIASIS IN URBAN DWELLINGS: NEW FINDINGS FROM A PROSPECTIVE STUDY IN BRAZIL
Author
Affilliation
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Associação Obras Sociais Irmã Dulce. Clinical Research Center. Salvador, BA, Brasil
University of California. School of Public Health. Division Epidemiology and Public Health Biology. Berkeley, California
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Hospital São Rafael, Salvador, Bahia, Brazil
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Associação Obras Sociais Irmã Dulce. Clinical Research Center. Salvador, BA, Brasil
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Associação Obras Sociais Irmã Dulce. Clinical Research Center. Salvador, BA, Brasil
University of California. School of Public Health. Division Epidemiology and Public Health Biology. Berkeley, California
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Hospital São Rafael, Salvador, Bahia, Brazil
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Associação Obras Sociais Irmã Dulce. Clinical Research Center. Salvador, BA, Brasil
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
Abstract
Despite the wealth of information on the prevalence and correlates of canine Leishmania infection (CLI),
data on its incidence are still sparse, and little is known regarding risk factors for CLI. We studied a cohort of dogs in
an urban area in Brazil to determine whether incidence varied with age, breed, and environmental characteristics. The
mean follow-up was 1.5 years, and the crude incidence rate was 11.8 cases/100 dog-years (95% confidence interval [CI]
8.6−15.6). In the multivariate analysis, short fur was the strongest predictor of CLI (relative risk [RR] 9.4). In
addition, our data indicate that raising pigs (RR 4.1), chickens (RR 3.3), or other livestock (RR 2.6) significantly
increased the risk of CLI. Thus, suggesting control measures directed towards modifying the environmental factors
favoring contact between vectors, reservoirs, and susceptible humans, such as proximity to pigpens or hen houses.
Furthermore, conventional control programs of insecticidal spraying of human dwellings should also apply insecticide in
and around animal sheds.
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