title: Calgary seeks help to identify E. coli source.
authors: Laura
authors: L
authors: Eggertson
mesh_terms: D000416:Alberta / Q000453:epidemiology; D004196:Disease Outbreaks; D004927:Escherichia coli Infections / Q000453:epidemiology* / Q000382:microbiology; D019453:Escherichia coli O157 / Q000302:isolation & purification*; D006801:Humans; D011159:Population Surveillance