Abstract
The failure of Yersinia enterocolitica, serotype 03, to grow in naturally infected raw pork was observed at both a refrigeration temperature of 6.degree. C and a room temperature of 25.degree. C. The rapid growth of environmental Yersinia organisms and aerobic microbial flora was observed in the raw pork at both the refrigeration and room temperatures. It appears that the growth of Y. enterocolitica serotype 03 may be suppressed by environmental Yersinia organisms and aerobic microbial flora normally present in raw pork.