The prevalence of Onchocerca spp. in cattle in northern Togo in 1979.

The prevalences of three species of Onchocerca parasitising the Somba race of cattle occurring in the Kara region in northern Togo were investigated. Onchocerca ochengi was common in the cattle rearing areas of Keran (42% of head infected) and Kozah (29% of head infected). The prevalences of O. dukei ranged from 35 to 73.5% and of O. gutturosa from 23.2 to 49.1%. No differences were noted in the percent of bulls and cows parasitised.