The sale and distribution of antibiotics approved for use in food-producing animals in the US decreased by 10% from 2015 to 2016, according to a US Food and Drug Administration (FDA) report released on Thursday.
The WHO is recommending that animal producers cease feeding or using medically important antibiotics to prevent potential disease or as growth promoters.
Despite an upcoming deadline to end the use of some antimicrobials for livestock production purposes, their overall sales have risen in recent years in the US.
A US federal appeals court has ruled against the need for regulatory action to end the use of non-therapeutic antibiotics such as penicillin and tetracyclines in farmed animals.