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Revista de la Facultad de Ciencias Veterinarias

versión impresa ISSN 0258-6576

Resumen

ZABALA, Eduardo E; RAMIREZ, Oneyda J  y  BERMUDEZ, Víctor. Visceral Leishmaniasis in a Dog. Rev.Fac. de Ciencias Veterinarias [online]. 2005, vol.46, n.2, pp.43-50. ISSN 0258-6576.

Visceral leishmaniasis is a worldwide distributed infectious and zoonotic disease affecting people, domestic, and wildlife animals.  It is caused by a diphasic protozoan of the genus Leishmania, involving distinct species that differs geographically between the Old and New World, and its arthropod vectors being from genuses Phlebotomus and Lutzomyia, responsible for  transmission in those areas, respectively.  Leishmania chagasi from the donovani complex, has been demonstrated as a cause for visceral leishmaniasis in Central and South America and its  sero prevalence, among Aragua state canine population, has been shown by a field study. A four months old, male canine boxer was presented with concern for acute onset of respiratory distress and exercise intolerance.  Physical examination revealed hyperthermia, generalized lymphoadenomegaly, severe dysrrittmia and tachycardia altering rhythm and heart rate. A muffled heart sound and thoracic dullness  were remarkable at auscultation and percussion, respectively. Despite of aggressive medical treatment, the patient died after 48 hours of continued monitoring at hospital facility.  At necropsy most prominent findings were represented by hepatic-splenomegaly due to chronic passive congestion, related to bilateral congestive heart failure (pleural and peritoneal effusion and pulmonary edema). The presence of Leishmania spp., amastigotes  in myocardial, spleen and lymph nodes tissues was revealed histologically, supporting  visceral leishmaniasis and infectious nature of this case report.

Palabras clave : Leishmaniasis; Leishmania donovani; dogs; protozoal infections; zoonoses; Aragua.

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