RESUMENEchinococcus granulosus es un cestodo de importancia zoonótica que afecta a una amplia gama de especies. El principal hospedero definitivo de este parásito es el perro doméstico, sin embargo, en algunas áreas del mundo se ha reportado la infección de carnívoros silvestres con este, estos potencialmente podrían tener un rol en la mantención de la infección en dichas áreas. Este estudio examina la presencia de E. granulosus en carnívoros silvestres en la Región de Coquimbo en Chile; para esto se obtuvieron muestras fecales de zorros chilla y culpeo capturados en seis sitios rurales de esta región entre 2005 y 2006. Mediante una prueba de ELISA coproantígeno se determinó una coproprevalencia a E. granulosus en chillas de 7% (2/28), la que varió entre 0% a 20% en los diferentes sitios estudiados. Solo cinco culpeos fueron capturados y ninguno fue positivo. Se discuten las implicancias que la presencia de E. granulosus en carnívoros silvestres podría tener para la mantención del parásito en el área estudiada.Palabras clave: Echinococcus granulosus, ELISA coproantígeno, carnívoros silvestres. SUMMARYEchinococcus granulosus is a cestode of zoonotic importance that infects a wide range of animals. The main definitive host of this parasite is the domestic dog, which most commonly becomes infected by ingestion of infected tissues from ruminant livestock. In some areas, however, wild carnivores have been reported to be infected with E. granulosus and to potentially have a role in the maintenance of infection. This study explores E. granulosus infection in free-ranging foxes in rural areas of the Coquimbo District. Faecal samples of live-trapped culpeo (Lycalopex culpaeus) and chilla (L. griseus) foxes were obtained in six of previously designed rural sites of the Coquimbo District in Chile between 2005 and 2006. Overall, E. granulosus coproantigen prevalence in chillas by a coproELISA test was 7% (2/28) and ranged from 0% to 20% in the different study sites. Only five culpeos were trapped and none was positive. The presence of E. granulosus in wild carnivores for the maintenance of this parasite in this District is discussed.
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