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AcuteTrypanosoma vivax infection of ethiopian cattle in the apparent absence of tsetse

Infection Aigue ATrypanosoma Vivax Chez Les Bovins Ethiopiens Malgre L'Absence Apparente De Tse-Tse

Infeccion Aguda PorTrypanosoma Vivax En Ganado Etiope En La Ausencia Aparente De Tsetse

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Summary

Investigations of acute trypanosomiasis in a group of 1,200 cattle provided strong evidence for mechanical transmission by haematophagous flies other than tsetse. Although recently introduced cattle may have had previous contact with tsetse flies the incident occurred in an area remote from their known range. Mortality exceeded 6% before the outbreak was controlled by chemotherapy. Mechanically transmittedTrypanosoma vivax infection may be of widespread occurrence in eastern Ethiopia.

Résumé

Les recherches des signes de la Trypanosomiase aiguë conduites dans un groupe de 1200 bovins ont apporté la preuve certaine de la transmission mécanique de la maladie par d'autres insectes hématophages que la tsé-tsé. Bien que du bétail récemment importé ait pu déjà être en contact avec ce vecteur, la maladie est apparue dans une région éloignée de sa zone habituelle. La mortalité a dépassé 6 p. 100 avant que le foyer n'ait pu être contrôlé par la chimiothérapie. La transmission mécanique de l'infection àT. vivax est probablement largement répandue dans l'Est éthiopien.

Resumen

La investigación sobre tripanosomiasis aguda, en un grupo de 1.200 animales, proporcionó evidencia de transmisión por moscas hematófagas diferentes a la tsetse. El incidente ocurrió en un área remota del habitat de la tsetse, aunque un grupo de ganado recientemente introducido, pudo tener algun contacto previo con éstas últimas. La mortalidad excedió el seis por ciento, antes que el brote se controlara. La transmisión puramente mecánica de la tripanosomiasis en Etiopía, podría tener más importancia que la que actualmente se le da.

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Roeder, P.L., Scott, J.M. & Pegram, R.G. AcuteTrypanosoma vivax infection of ethiopian cattle in the apparent absence of tsetse. Trop Anim Health Prod 16, 141–147 (1984). https://doi.org/10.1007/BF02252779

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