ENVIRONMENT

Confirmed Screwworm Cases Prompt Regional Agricultural Response

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La Salle County, Texas: the U.S. Department of Agriculture and Texas animal health officials confirmed an additional New World screwworm case in a calf this week, joining multiple detections first announced on June 3. Federal teams from the National Veterinary Services Lab in Ames have been dispatched and joint investigations and testing expanded in affected areas. Idaho and Louisiana implemented new animal movement restrictions and heightened surveillance this week in response, and USDA and state partners increased trapping, testing, outreach, and sterile-insect release operations. Officials said immediate steps include case tracing, on-site diagnostics, and coordination with local veterinarians while regulatory certificates and transport documentation were tightened for animals from affected zones.

Prepared by Olivia Bennett and reviewed by editorial team.

Timeline of Events

Over the past year the pest advanced northward through Mexico toward the U.S. border.
June 3: USDA confirmed the first U.S. case in Zavala County, Texas.
Early June: Additional cases were confirmed, including a calf in La Salle County.
USDA deployed a National Veterinary Services Lab team from Ames to Texas and expanded testing.
States including Idaho and Louisiana issued animal movement restrictions and increased surveillance.

Why This Matters to You

Screwworms are a threat to livestock, pets, and even humans. If you're in an affected area, be vigilant. Check your animals regularly for signs of infection. Report any unusual wounds to your vet or local agricultural office.

The Bottom Line

This screwworm outbreak is a serious agricultural issue. It's not just Texas' problem - it affects the whole country's food supply chain. Stay informed, especially if you're in the livestock business. Worth forwarding if you know a farmer or rancher.