| parasitologic survey of onchocerca volvulus infection in the nimiyama chiefdom, kono district, sierra leone. | infection due to onchocerca volvulus was investigated in the nimiyama chiefdom, kono district, sierra leone, where simulium damnosum s.l. is known to breed but no data on the prevalence and intensity of o. volvulus infection exists. of the 735 individuals sampled by the skin snip method in five villages, 471 (64%) were infected. the infection rate for males was significantly (p less than 0.05) higher than that of the females. two hundred and ninety-one (70.0%) of the 416 males skin snipped and 1 ... | 1989 | 2595798 |