Scientists are beginning to detect antibiotic-resistant bacteria in pork, pigs and some veterinarians, raising the issue of whether these so-called superbugs might find a new route to infect farmworkers or even people who eat pork.

University of Minnesota veterinary public-health researchers last month reported they found the antibiotic-resistant bugs in 7.1% of 113 swine veterinarians tested. Public-health doctors at the University of Iowa found the same bacterial strains among 147 of 299 pigs tested with nasal swabs.

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