The Food and Drug Administration bans the use of an antibiotic in animals, citing a threat to human health. The drug, Baytril, has been linked to new microbes resist antibiotics, both in animals and in humans. Baytril is used to treat infections in chickens and turkeys.
The drug is also s a close chemical cousin to human medicines such as Cipro. It's believed to be the first time the FDA has acted to withdraw an animal drug to prevent drug-resistance problems in humans. NPR's Richard Knox reports.