title: Cryptosporidium surveillance.
mesh_terms: D000328:Adult; D000818:Animals; D002648:Child; D003457:Cryptosporidiosis / Q000453:epidemiology*; D003458:Cryptosporidium / Q000302:isolation & purification*; D004739:England / Q000453:epidemiology; D006801:Humans; D014871:Water Microbiology