Texas Confirms New Screwworm Cases, USDA Intensifies Eradication Efforts as Cross-Border Risk Grows

June 8, 2026
Texas Confirms New Screwworm Cases, USDA Intensifies Eradication Efforts as Cross-Border Risk Grows
  • Two more New World screwworm cases have been confirmed in Texas—a calf in La Salle County and a dog in Andrews County—with the dog likely having recently traveled from Mexico, underscoring the cross-border risk.

  • The core control strategy remains releasing sterile male flies to mate with wild females, producing no offspring and gradually eradicating outbreaks.

  • USDA officials warn the spread threatens the U.S. cattle industry and are intensifying eradication efforts, including boosting sterile-fly production and building a fly facility in Texas.

  • USDA advises ongoing surveillance and outreach to producers, veterinarians, and communities, and provides guidance to PMPs on recognizing livestock symptoms.

  • USDA and APHIS have issued updates and responses, including emergency actions and continuous monitoring of the outbreak.

  • The outbreak poses a persistent threat to livestock, pets, wildlife, and occasional human risk, demanding vigilance and rapid response across the region.

  • Alabama officials reiterate this is an animal-health issue, not a food-safety concern, with no confirmed cases in the state and preparedness already in place.

  • Authorities emphasize animal health risk, ongoing surveillance, and the importance of prompt veterinary reporting of suspicious signs.

  • The response reflects a coordinated federal and agricultural-industry effort aimed at stopping the outbreak before it causes widespread damage.

  • Public guidance urges owners to inspect livestock and pets for wounds, maggots, or lesions and to contact veterinarians or officials if infestations are suspected.

  • Alabama reiterates no state cases and advises statewide surveillance, urging farmers to monitor for unusual larvae and maintain wound hygiene.

  • Farmers are advised to monitor animals closely, keep wounds clean and covered, and report suspicious larvae on living animals to veterinarians or state authorities.

Summary based on 25 sources


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