title: The occurrence and significance to animal health of salmonellas in sewage and sewage sludges.
abstract: A total of 882 samples of settled sewage, sewage sludges and final effluents from eight sewage treatment plants were examined for the presence of salmonellas. Of these samples 68% were positive, isolations being made most frequently from settled sewage (85%), raw sludge (87%) and anaerobically digested sludge (96%). Fewer isolations were made from final effluent (24%) and processed sludges (58%). Samples usually contained less than 200 salmonellas/100 ml and arguments are presented that such concentrations should not lead to disease in animals if suitable grazing restrictions are followed.
mesh_terms: D000818:Animals; D001431:Bacteriological Techniques; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control; D004739:England; D012475:Salmonella / Q000145:classification / Q000302:isolation & purification*; D012498:Sanitary Engineering / Q000592:standards; D012703:Serotyping; D012722:Sewage / Q000032:analysis*; D012988:Soil Microbiology; D014871:Water Microbiology
chemical_list: D012722:Sewage