Despite recent efforts by health experts, doctors, and the Food and Drug Administration to pull the meat industry away from its heavy use of antimicrobials, livestock producers seem to have dug in their heels.
From 2009 to 2014, the amount of antimicrobials sold and distributed for use in livestock increased by 22 percent, according to an FDA report released Thursday. Of the antimicrobials sold in 2014, 62 percent were related to drugs used in human health, also called medically important. From 2009 to 2014, sale and distribution of medically important antimicrobials used on farms also jumped—an increase of 23 percent.
That brings the 2014 total of antimicrobials sold for US livestock to 15,358,210 kilograms, including 9,475,989 kilograms of medically important drugs, according to the report.
In 2013, researchers estimated that agriculture and aquaculture take in about 80 percent of all antibiotics (which are technically a subset of antimicrobials, but they are sometimes used synonymously) sold in the US.
The new data comes amid calls for responsible use of antimicrobials and antibiotics—in clinics as well as farms. Last month, the American Academy of Pediatrics called on livestock producers to curb overuse of drugs on farms. Much of the tonnage of drugs go to illness prevention on factory farms rather than treatments for sick animals. And producers sometimes use the drugs because they help animals fatten up. Such overuse, the doctors argued, is fueling the development of antimicrobial resistance among microbes, which in turn can cause difficult-to-treat infections in people, particularly vulnerable children.


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