New World Screwworm outbreak

New World Screwworm Hits US Cattle for First Time in 60 Years

The New World Screwworm outbreak returned to U.S. soil for the first time in 60 years, with USDA confirming 16 domestic animal cases across Texas and New Mexico as of late June 2026. The flesh-eating parasite threatens the $113 billion U.S. cattle industry and has triggered an emergency federal response involving sterile fly releases, movement restrictions, and up to $850 million in new funding.

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