Do we Really Need to use Human Medicine on Farm Animals?

This week, the U.S. Food and Drug Administration restricted how a critically important drug for humans is used in farm animal production.  What this means, and how industrial farm animal production is a leading contributor of antibiotic resistant bacteria, is the subject of another piece I wrote for NationalGeographic.com. http://bit.ly/x0l057

Photo credit: USDA/Keith Weller

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