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BACKGROUND   Visceral leishmaniasis (VL) is relevant for human and animal public health. Several factors have been associated with the risk of  Leishmania infantum  infection in dogs. However, dog owner characteristics have been rarely explored.    OBJECTIVES   To estimate the prevalence and to identify the associated factors for VL infection including dog owners characteristics.    METHODS   A cross-sectional study was conducted including dogs from an endemic canine visceral leishmaniasis (CVL) region in the Federal District, Brazil. The infection was detected using parasitological, serological, and molecular methods. The associated factors were identified through Poisson regression modelling.    FINDINGS   The prevalence of infection was 26.25% [95% confidence interval (CI): 20.05 to 33.57]. The associated factors were: short coat prevalence ratio (PR) = 2.33 (95% CI: 1.02 to 5.22); presence of backyard with predominance of soil and/or vegetation PR = 4.15 (95% CI: 1.35 to 12.77); and highest gross family income score PR = 2.03 (95% CI: 1.16 to 3.54).    MAIN CONCLUSION   This is the first study that relates higher socioeconomic status of dog owners as an independent factor associated with higher prevalence of VL infection, along with other strongly associated factors related to receptive environment for phlebotomines. Our findings strengthen the need for exploration of the biological and behavioural bases linking dog owner characteristics to the risk of canine infection in prospective cohort studies.

A cross-sectional approach including dog owner characteristics as predictors of visceral leishmaniasis infection in dogs