title: Letter: Schistosoma haematobium infection: immunity or concomitant immunity?
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002980:Climate; D006801:Humans; D010270:Parasite Egg Count; D012548:Schistosoma haematobium; D012552:Schistosomiasis / Q000276:immunology* / Q000635:transmission / Q000652:urine; D014556:Urine / Q000469:parasitology