The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than a half century.

What to know about the New World screwworm fly and its reappearance in the US
The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than a half century. An infestation from its flesh-eating larvae has been confirmed in south Texas in a 3-week-old calf in...
