New World screwworm Update & Management Practices

This episode of the American Sheep Industry Association’s Podcast breaks down what the New World Screwworm means for sheep producers on the ground. Host Jake Thorne sits down with Dr. Rosie Busch, UC Cooperative Extension and UC Davis, School of Veterinary Medicine, to discuss current cases, official regulations, and practical management strategies. Key Topics Covered Outbreak Status: The current state of New World Screwworm cases in Texas and neighboring regions, including the distinction between active and inactive cases. Eradication & Tech: How the Sterile Insect Technique (SIT) works, how AI is improving sterile fly distribution, and updates on USDA breeding facility capacities. Regulations & Movement: Rules for infested/surveillance zones, inspection protocols, and direct-to-slaughter requirements. Treatment Options: The role of systemic treatments like injectable Dectomax (and its EUA status) versus topicals, plus guidance on proper herd management to minimize wound risks.