title: Haemorrhagic colitis and Escherichia coli O157--a pathogen unmasked.
mesh_terms: D003092:Colitis / Q000453:epidemiology* / Q000209:etiology; D004196:Disease Outbreaks; D004927:Escherichia coli Infections / Q000453:epidemiology* / Q000382:microbiology; D006471:Gastrointestinal Hemorrhage / Q000453:epidemiology* / Q000209:etiology; D006801:Humans