Flesh-Eating Screwworm Resurfaces in Texas Cattle, Agriculture Secretary Warns

Agriculture Secretary Brooke Rollins announced on June 8, 2026, that the New World screwworm, a parasite previously considered eradicated in the United States, has reemerged in South Texas. Rollins stated that ranchers are facing significant challenges as officials work to contain the outbreak. Two confirmed cases have raised concerns about the impact of border policies and cattle movement. Rollins emphasized the importance of reporting sightings of the parasite to manage the situation effectively. She noted that measures are being taken to combat the parasite, including the release of approximately 10 million sterile flies per week in Texas, which are intended to mate with female screwworms to control the population. Rollins reassured that affected animals are expected to recover and that the food supply remains secure, with the risk to humans being historically low.