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What to know about the New World screwworm fly and its U.S. reappearance

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.

Screwworm fly detected in Texas decades after cattle threat was largely eradicated in U.S.

4 June 2026 at 18:50
Agriculture Secretary Brooke Rollins said there have been no other detections of the fly in the U.S., and officials were quick to say that while the fly's larvae are a threat to livestock production, they don't infest food.

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