Public Health & One Health

Cochliomyia hominivorax, the New World screw-worm fly, or screw-worm for short

FDA Authorizes Emergency Use of Ivermectin to Help Prevent New World Screwworm in Horses

The U.S. Food and Drug Administration has issued an Emergency Use Authorization (EUA) for Ivermectin Liquid for Horses to provide short-term prevention of New World screwworm infestations in horses. The authorization adds another federal tool aimed at protecting U.S. livestock and equine populations as officials prepare for the potential spread of the destructive parasite.

Cochliomyia hominivorax, the New World screw-worm fly, or screw-worm for short

USDA Confirms Two Additional New World Screwworm Cases in Texas

USDA has confirmed two additional cases of New World screwworm (NWS) in Texas, bringing the total number of recent U.S. detections to four. Federal and state officials are expanding surveillance, quarantine measures, and sterile fly release operations as eradication efforts intensify.

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