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Screwworms Back in U.S. Wildlife | Lafayette Louisiana News
A deadly fly parasite, the New World screwworm, is making a troubling comeback in the U.S., with confirmed sightings in Texas and New Mexico—and a potential threat looming for Louisiana. This flesh-eating fly lays up to 3,000 eggs near wounds, and its larvae burrow into living tissue, causing fatal infections in deer, fawns, and other wildlife. Once eradicated nationwide in 1966 via sterile insect tactics, it’s resurfaced sporadically since, including a devastating 2016 outbreak in Florida that killed 15% of Key deer. Warmer weather accelerates its life cycle, while cold can kill pupae…
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