New World Screwworm Resources

As of June 9, 2026, the USDA has confirmed 5 cases of the New World Screwworm in Texas, including a confirmed case in a goat in Gillespie County, and 1 in New Mexico. The United States Department of Agriculture (USDA) and the Texas Animal Health Commission (TAHC) is encouraging farmers, ranchers, and anyone who might engage with livestock, wildlife, or domesticated animals to be on the lookout for possible cases of New World Screwworm infestation. The USDA regularly updates this website to provide a running total of confirmed cases within the United States. Two of the confirmed cases are in Zavala County, one is in La Salle County, a third in Gillespie County, and one in a dog in Lea County, New Mexico. Please reference screwworm.gov for the latest on confirmed cases within the United States and resources related to readiness and treatment. The USDA and TAHC establishes quarantine zones around confirmed cases, please refrain from moving any and all live animals in or out of the quarantine zones without proper inspection. The Federal Government, led by the USDA, continues to engage with the government of Mexico and local officials in Texas to actively monitor and prevent the spreading of the screwworm into Texas. Livestock importation from Mexico is currently paused to prevent further transmission. The below resources and recommendations have been assembled for the benefit of constituents: Screwworm.gov -Website managed by the USDA to provide timely updates on confirmed cases and information for interested parties. Screwworm@usda.gov -USDA’s screwworm specific email tipline is monitored 24/7 should anyone have questions or concerns.