Texas screwworm cases are drawing national attention after the U.S. Department of Agriculture reported additional New World screwworm detections connected to Texas animal health surveillance on Monday, June 8, 2026. The cases, including a calf in La Salle County and a dog case initially linked to Andrews County, have raised concern because the parasite can threaten cattle, pets and wildlife. Texas Screwworm Cases Raise Livestock Concerns At the time of t