Studies on schistosomiasis in Sierra Leone. I.
D000293:Adolescent; D000367:Age Factors; D000818:Animals; D002033:Bulinus; D002648:Child; D002675:Child, Preschool; D004199:Disease Vectors; D004463:Ecology; D005260:Female; D006801:Humans; D008297:Male; D010270:Parasite Egg Count; D012548:Schistosoma haematobium / Q000302:isolation & purification; D012552:Schistosomiasis / Q000453:epidemiology* / Q000652:urine; D012621:Seasons; D012807:Sierra Leone; D014887:Weather