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vol.8 número1-4Estudios sobre leishmaniasis tegumentaria en el Perú: IV. Observaciones epidemiológicas sobre la utaEstudios sobre leishmaniasis tegumentaria en el Perú: VI. Relación entre leishmaniasis tegumentaria y Phlebotomus índice de autoresíndice de materiabúsqueda de artículos
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Revista Peruana de Medicina Experimental y Salud Publica

versión impresa ISSN 1726-4634


HERRER, Arístides. Estudios sobre leishmaniasis tegumentaria en el Perú: V. Leishmaniasis natural en perros procedentes de localidades utógenas. Rev. perú. med. exp. salud publica [online]. 1951, vol.8, n.1-4, pp.87-117. ISSN 1726-4634.

During three or more years observations of several domestic animals were carried out in the utogenous zone of Huarochirí province, Lima, Perú, permitting the detection of spontaneous leishmania infection in 46 dogs. Other animals examined were cats, donkeys, horses and hogs, in none of which it was possible to find leishmania infection. In the first year of observations 469 animals were examined belonging to the leishmaniasis endemic zones of the following valleys: Rímac, Canchacalla and Lurín. Then, it was assumed that spontaneous or natural infection in animals would show the same ulcerative skin lesions as in man. This, was not confirmed. At the same time, however, experimental inoculations in animals were undertaken at the laboratory (Lima) with uta strains of leishmania. This permitted to know the real aspects of such leishmania infection in dogs. With this knowledge in mind a new series of 621 animals was studied in the whole utogenous zone of the Huarochirí province, among which 513 dogs were observed finding 46 of them naturally infected while the rest of the animals under study were negative. In all cases infection was detected only in the snout. These field studies of spontaneous or natural leishmania infection in dogs., permit the following statements: 1. Lesions are bening in general including, in some cases, without any macroscopic alteration of the parasitized skin. The few ulceratedlesions are superficial and frecuently heal spontaneously without leaving scars. 2. Morphologically it is impossible to differenciate the parasite found in dogs from that found in uta cases. 3. Cultures for leishmania made from yugular blood, as well as those made from heart, hver and spleen blood, were negative. 4. In some cases it was possíble to verify the infection in dogs that remained a few rnonths in endemic localities. S. There exists a noticeable paralelism between uta infection in man and natural leishmania infection in dogs. 6. There is a marked similarity between spontaneous leishmania infection in dogs with that experimentally produced through inoculations with uta strains of leishmania. 7. Specially in localities of high uta incedence it is possible to find dwelling together naturally infected dogs and uta cases. 8. Naturally infected dogs do not react to the skin test with "leishmanina" (a leishmania antigenic fraction).

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