Leishmaniases are zoonoses that are undergoing expansion in Brazil. Dogs are of importance regarding transmission and dispersion of the disease, especially in areas presenting visceral leishmaniasis. The aim of this study was to evaluate the seroprevalence of leishmaniasis among domestic dogs in the urban area of Cuiabá. For this investigation, four districts of Cuiabá were selected, one in each administrative region. The dog sampling was defined statistically, taking the prevalence to be 8.4%. Among the 468 dogs examined, 16 presented an indirect immunofluorescence reaction, thus resulting in an overall prevalence of 3.4%. There was no predisposition towards canine leishmaniasis occurrences in relation to breed, sex or age. The main risk factors for occurrences of canine infection identified in the city of Cuiabá were the presence of dogs living in areas surrounding homes and the proximity of homes to forests. Thus, there have been changes in leishmaniasis occurrences within the urban environment.
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