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Salmonella in Cattle Abattoirs in Costa Rica^*

Salmonella organisms were sought in five Costa Rican cattle abattoirs whose products are approved for export to the United States. No Salmonella were found in samples of cattle feces. From one sample of meat, Salmonella saint paul 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 Salmonella spp. From floor-drain swabs collected from four of the five plants, Salmonella group E₁ was isolated. Fecal samples from workers in two of the five plants were tested for Salmonella spp.; there were seven isolations from one plant and none from the others.

^* This research was supported in part by U. S. Public Health Service Traineeship Grant 28969, PHS Training Grant 5 TO1-AI-00007, PHS Research Grant TW 00148, and PHS Taineeship Grant 67-504.