A new study published in mBio, a journal of the American Society for Microbiology, shows how a Staph germ passed from humans into pigs, where it became resistant to some important antibiotics. Then, gulp, the antibiotic-resistant germ jumped back to humans.
"It's like watching the birth of a superbug," Lance Price of the Translational Genomics Research Institute, told NPR’s Richard Knox.
Many livestock groups (NPR provides this link from the American Meat Institute) say there’s no evidence that using antibiotics in livestock feed creates health problems for humans and that may be true. But this new report will surely re-ignite the debate.