title: An outbreak of Escherichia coli O157:H7 associated with a children's water spray park and identified by two rounds of pulsed-field gel electrophoresis testing.
mesh_terms: D000328:Adult; D001955:British Columbia / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000517:prevention & control; D016521:Electrophoresis, Gel, Pulsed-Field; D004927:Escherichia coli Infections / Q000453:epidemiology* / Q000517:prevention & control; D019453:Escherichia coli O157; D006801:Humans; D010988:Play and Playthings; D011633:Public Facilities; D011998:Recreation; D014867:Water
chemical_list: D014867:Water