Seroprevalence and risk factors for canine toxocariasis by detection of specific IgG as a marker of infection in dogs from Salvador, Brazil

► Anti-T. canis IgG seroprevalence in dogs from an urban area of Brazil was of 82.7%. ► 301 sera were tested by ELISA with excretory-secretory antigens of T. canis larvae. ► The serology aided to define risk factors for the acquisition of toxocariasis by dogs. ► The most found risk factors suggest a lack of veterinary care due to poverty.