Epidemiology of tick-borne diseases of cattle in zimbabwe. II. Anaplasmosis
- 1 June 1984
- journal article
- research article
- Published by Springer Nature in Tropical Animal Health and Production
- Vol. 16 (2) , 63-70
- https://doi.org/10.1007/bf02239846
Abstract
A survey on the incidence of antibodies toAnaplasma marginale in one- to three-year-old cattle was carried out in Zimbabwe using the capillary tube agglutination test. Antibodies were detected in all but one of 118 batches of sera collected from different localities throughout the country. There was no clear relationship between the frequency of occurrence of positive serological reactors, which was similar in both commercial and communal farming areas, and the incidence of clinical anaplasmosis. However, the highest numbers of cattle exhibiting positive reactions were generally recorded from the areas that were most heavily tick infested. There was evidence that wild ungulates may serve as reservoirs of infection as antibodies toA. marginale were detected in sera from buffalo (Syncerus caffer) and impala (Aepyceros melampus). Une enquête sur l'incidence des anticorps dus àAnaplasma marginale chez des veaux de un à trois ans a été effectuée au Zimbabwe en utilisant le test d'agglutination en tube capillaire. Les anticorps ont été décelés dans tous les cas sauf un des 118 lots de sérum recueillis dans les différentes localités du pays. Il n'y a eu aucune relation apparente entre la fréquence de l'apparition de réactions sérologiques positives, qui était semblable dans les régions d'élevage industriel et d'élevage villageois et l'incidence d'anaplasmose clinique. Cependant les effectifs les plus élevés de bovins positifs ont été généralement localisés dans les régions les plus fortement infestées par les tiques. Il semblerait que les ongulés sauvages agissent comme réservoirs de l'infection puisque des anticorps àA. marginale ont été décelés dans des sérums de buffles (Syncerus caffer) et d'impalas (Aepyceros melampus). Se llevo a cabo un estudio de la prevalencia de anaplasmosis (Anaplasma marginale) en Zimbabwe, utilizando la prueba de aglutinación en tubos capilares. Se detectaron anticuerpos en todos, menos en un grupo, de 118 muestras de suero colectadas en diferentes localidades através del país. No hubo correlación entre reactores positivos de áreas de pastoreo comerciales y comunales, y casos de anaplasmosis clínica. Sinembargo, el número más alto de reactores correspondió, al área de pastoreo más infestada de garrapatas. Hubo evidencia, que animales salvajes de pezuña endida, servian posiblemente de portadores de la infección, debido a que se encontraron anticuerpos deA. marginale en suero de búfalos (Syncerus caffer) e impala (Aepyceros melampus).This publication has 20 references indexed in Scilit:
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