Key facts
- New Mexico confirmed a case of New World screwworm in a beef cow.
- Texas confirmed New World screwworm in wildlife.
- USDA is expanding surveillance to identify additional cases.
The New Mexico Department of Agriculture confirmed a case of New World screwworm in a beef cow. The U.S. Department of Agriculture is expanding surveillance around affected locations to identify additional cases and determine if the pest has spread.
The detection of New World screwworm in livestock and wildlife necessitates expanded surveillance and impacts trade by influencing the phased reopening of U.S. southern border ports for cattle and equine imports from Mexico.
The New Mexico Department of Agriculture has confirmed a case of New World screwworm in a beef cow. In response, the U.S. Department of Agriculture (USDA) is increasing surveillance in affected areas to detect further spread of the pest. The USDA is also proceeding with a phased reopening of southern border ports for livestock imports from Mexico. The Santa Teresa port was set to reopen for equine imports on October 26, 2026, following earlier reopenings for cattle imports at other ports.
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