Serosurvey of Borrelia in dogs, horses, and humans exposed to ticks in a rural settlement of southern Brazil.

The aims of the present study were to serosurvey dogs, horses, and humans highly exposed to tick bites for anti-Borrelia burgdorferi s.l. antibodies, identify tick species present, and determine risk factors associated with seropositivity in a rural settlement of Paraná State, southern Brazil.