06/06/2026
"Warmer temperatures are expanding the fly's habitat and cold snaps that killed them off each year in marginal habitats are becoming less frequent and less severe."
The screwworm can infest any warm-blood animal, including wildlife, pets and humans.
The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than a half century, with an infestation from its flesh-eating larvae confirmed in south Texas.