Evidencia clínica y serológica de rickettsiosis canina en Chile

Abstract

Rickettsial infections in pets have not been documented in Chile. Some of those infections have relevant zoonotic potential. Objectives: To report two serologically confirmed cases of canine rickettsiosis. To determine seroprevalence to Rickettsia sp in a group of dogs. Methods: IgG antibodies anti-R. conorii and anti-A. phagocitophilum by IFI in two dogs with clinical rickettsiosis. IgG antibodies anti-R. conorii in a group of 77 dogs. Results: Clinical cases: a dog presented with fever, myalgias and melena, another dog with bleeding and neurological involvement. Seroprevalence: 35% of the dogs had antibodies against Rickettsia. Discussion: This is the first evidence of canine rickettsiosis in Chile, both clinical and serological. Coinfection with two tickborne agents: Rickettsia and Anaplasma, is documented. Molecular studies are needed to confirm the rickettsial species present in Chile. The zoonotic role of these infections must be also studied.