| onchocerca ochengi acquisition in zebu gudali cattle exposed to natural transmission: parasite population dynamics and igg antibody subclass responses to ov10/ov11 recombinant antigens. | ngaoundere gudali zebu cattle naturally exposed to simulium damnosum s.l. and culicoides spp. bites were examined during 4 years for o. ochengi adult worm acquisition, onchocerca ochengi and onchocerca gutturosa skin microfilaria dynamics, and igg1 and igg2 antibody subclass responses. eleven animals acquired a total of 465 o. ochengi nodules (average of 17 per female and 72 per male). the o. ochengi nodule load was highly variable in individual animals and exacerbated in mature male cattle. thr ... | 2004 | 15158555 |
| age-related differences in parasitosis may indicate acquired immunity against microfilariae in cattle naturally infected with onchocerca ochengi. | onchocerca ochengi is a common parasite of cattle in savanna areas of west africa and its adult stages inhabit intradermal nodules. we have exploited the accessibility of the macrofilariae to examine quantitative and qualitative differences in both the macro- and microfilariae (mff) in relation to age in naturally infected cattle. autochthonous cattle at a site on the adamawa plateau, north cameroon, situated near a perennial simulium damnosum s.l. breeding site, were examined in three age group ... | 1992 | 1594291 |