Serological and parasitological prevalence of bovine trypanosomosis in small holder farms of the Vina division, Adamawa region of Cameroon

4 trypanosomes/ml) in both zones. The mean PCV of animals in Mbe Plain (26.22%) was significantly lower than that of animals on the Plateau (30.2%). In the Mbe Plain the mean PCV of ELISA-positive animals (23.71%) was very significantly (p 0.05) the seroprevalence and the mean PCV in both zones whereas the prevalence with the BCT was significantly higher in male cattle than in female in both Plateau and the Mbe plain (p < 0. 05). The risk of bovine trypanosomosis was higher in the Mbe plain than in the plateau. In both study areas the intensity of animal trypanosomosis varies according to the ecological niches, suggesting that the vectors may be localized in a number of foci.