Flesh-eating New World screwworm found in Texas calf, USDA says
The USDA has confirmed the presence of a flesh-eating New World screwworm in a calf in Texas. Immediate actions are being taken to eradicate the pest, including establishing a quarantine zone and increasing traps. The New World screwworm has been detected in Mexico and poses a threat to livestock and, in rare cases, humans.
- ▪A 3-week-old calf in Zavala County, Texas, was found to be infested with New World screwworm larvae.
- ▪The USDA is implementing a 12-mile quarantine zone around the detection site to control the spread.
- ▪Over 26,000 screwworm cases have been reported in Mexico, with more than 2,700 still active.
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U.S. Flesh-eating New World screwworm found in Texas calf, USDA says By Kierra Frazier Kierra Frazier News Editor Kierra Frazier is a news editor for CBS News & Stations. Read Full Bio Kierra Frazier June 3, 2026 / 10:00 PM EDT / CBS News Add CBS News on Google The U.S. Department of Agriculture confirmed the presence of a flesh-eating New World screwworm in Texas on Wednesday. The USDA said the only animal affected was a 3-week-old calf in Zavala County, Texas, after larvae were identified in its umbilical area.
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