Human community ecology of urinary schistosomiasis in relation to snail vector bionomics in the Igwun River Basin of Nigeria.

摘要: In a 15-months filed study of the human community ecology urinary schistosomiasis 15.0% prevalence rate was recorded in 1,625 individuals examined. 37.0% infected had infections low intensity. 34.0% were moderate intensity, while 28.7% high intensity infections. Male 16.7% not statistically different (P less than 0.05) from female 13.3%. The population Bulinus snail intermediate host showed seasonal fluctuations with peak May, and trough January. Infection rates snails rose gradually 60% February to 75% May. Cercarial burdens 500 cercariae per month count 900 June. Water contact activities either complete long term, partial medium term or limited short term. Age, sex, occupation important determinants type, duration period water activities. Results also suggest that exposure indices related infection