‘Superbug’ Transfer: The Jump From Humans, to Animals, and Back

Methicillin-resistant Staphylococcus aureus

News media outlets throughout the nation were abuzz last week with the report of new scientific research showing, for the first time, how a strain of infectious Staph began life in humans, then spread to livestock where it became MRSA, and then jumped back to humans. The study was published Tuesday in the online journal mBio.

National Public Radio’s popular blog, The Salt, noted in its lead story Tuesday, that “Researchers have nailed down something scientists, government officials and agribusiness proponents have argued about for years: whether antibiotics in livestock feed give rise to antibiotic-resistant germs that can threaten humans.”

“Finally, a smoking gun connecting livestock antibiotics and superbugs,” said a headline in the online environmental publication Grist, written by contributing writer Tom Laskawy. As one who has covered the topic for years, Laskawy was not understating the importance of the research. Read More >