Volume 18, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



organisms were sought in five Costa Rican cattle abattoirs whose products are approved for export to the United States. No were found in samples of cattle feces. From one sample of meat, was isolated. Five samples of meat from each of two slaughterhouses yielded multiple isolations of other enteric bacteria. Swabs taken from equipment, floors and walls, and workers' clothing in the five abattoirs were all negative for spp. From floor-drain swabs collected from four of the five plants, group E was isolated. Fecal samples from workers in two of the five plants were tested for spp.; there were seven isolations from one plant and none from the others.


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