What to know about the New World screwworm fly and its reappearance in the US

The New World screwworm fly has reappeared in the U.S., threatening the cattle industry with its flesh-eating larvae. An infestation was confirmed in a 3-week-old calf in Texas, marking the first case since 1966, after the fly was previously eradicated through sterile male fly releases. Officials emphasize the fly does not infest food and is unlikely to disrupt beef production.