Hemolytic-uremic syndrome--New York, Massachusetts, Virginia, District of Columbia.
D002648:Child; D002675:Child, Preschool; D004219:District of Columbia; D006463:Hemolytic-Uremic Syndrome / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D008404:Massachusetts; D009518:New York; D014768:Virginia