Yersinia enterocolitica has recently been recognized as one of the common bacterial causes of gastroenteritis in children.1[ill]2 Septicemia due to this organism has been reported to occur primarily in patients who are immunosuppressed or who have an underlying illness such as cirrhosis, thalassemia, or diabetes mellitus.3,4 The two cases reported here provide documentation of the occurrence of Y enterocolitica septicemia in apparently normal infants.
Report of Cases.—Case 1.—A 6-week-old boy was admitted to Children's Hospital of Pittsburgh because of fever and diarrhea. He had been well until watery diarrhea began three days prior to admission. One day prior to admission, fever developed and diarrhea persisted. Pregnancy and delivery were normal. His birth weight was 2.4 kg. There was no exposure to animals. Feedings were with a formula concentrate that was diluted with tap water.
Physical examination showed a well-hydrated boy who appeared to manifest symptoms of