When the U.S. Food and Drug Administration restricted the routine use of a class of antibiotics known as cephalosporins in livestock, it picked an easy target. The agency's move is better than nothing, but nonetheless it is a reminder of the FDA's achingly slow and timid efforts to wean agriculture off the overuse of important medications. Call it a tiptoe forward after a recent giant step in the other direction and a long era of standing in one place.
Eighty percent of the antibiotics used in this country are given to chicken, pigs, turkey and cattle, not because the animals are sick but to fatten them and prevent illness from sweeping through crowded pens. Evidence has been building for decades that the overuse of antibiotics in livestock has helped lead to the emergence of antibiotic-resistant bacteria, which then present a threat to human health.
In this latest move, announced last week, the FDA restricted the agricultural use of cephalosporins, which also are used to treat people for food-borne pathogens such as salmonella and E. coli. Drug-resistant salmonella already was being found more commonly in livestock. The antibiotics also are important in treating infections in children and cancer patients.
The change won't take a huge toll on the agricultural industry. Cephalosporins accounted for less than 1% of antibiotic use in livestock, and that was before 2010, when its use dropped more than 40%.