Abstract
The aim of this study was to identify the occurrence of antibodies and risk factors for infection for Toxoplasma gondii in dogs in the cities of Lages and Balneário Camboriú, Santa Catarina State, Brazil. Blood samples from 400 domiciliated dogs were processed for antibody detection against T. gondii by indirect immunofuorescence antibody test (IFAT). The following variables were obtained by questionnaire: breed, age, sex, diet, environment, presence of cats and street access. A Chi-Square test was performed to verify the association between the seroprevalence with the studied variables. From all evaluated dogs, 89 (22.3%) had antibodies against T. gondii. A total of 52 (26%) and 37 (18.5%) dogs were positive for T. gondii in Lages and Balneário Camboriú, respectively. No statistical differences were observed on the prevalences of T. gondii between both cities. Greater occurrences of seropositives for toxoplasmosis were observed in mixed-breed dogs (P = 0.002), who had access to the street (P = 0.003) and received homemade diet (P = 0.028). A strong trend for seropositivity against T. gondii was observed among adult dogs, indicating post-natal exposure, and among those that have previous contact with cats.
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