This episode was recorded when the New World Screwworm was still confined to Mexico. Confirmed cases have now been detected in Texas, with the first on June 3, 2026 in Zavala County, plus additional cases in La Salle County and a dog in Andrews County (as of June 8, 2026). The situation is evolving rapidly.
The information and advice shared by Dr. Sonja Swiger remains accurate and highly relevant for identification, inspection, treatment, and reporting.
Stay vigilant — Check livestock, pets, and wounds regularly. Report any suspicious maggots or infestations immediately.
Reporting & Latest Updates:
• Texas Animal Health Commission (TAHC): https://www.tahc.texas.gov/emergency/nws.html
• 24/7 TAHC Hotline: 1-800-550-8242
• USDA Stop Screwworm: https://www.aphis.usda.gov/animals/animal-health/livestock-and-poultry-disease/stop-screwworm
In the Living Room with Dr. Sonja Swiger – New World Screwworm Threat
Join us for an important conversation with Texas A&M AgriLife Extension entomologist Dr. Sonja Swiger about the New World Screwworm — a serious parasitic fly that poses a major threat to livestock, wildlife, pets, and potentially humans.
Dr. Swiger explains:
What the New World Screwworm is and why it’s so dangerous
How to inspect animals and identify suspicious wounds/maggots
What to do if you find something (treatment, reporting, and sample collection)
The history of eradication and current sterile insect program
Impact on cattle, deer, dogs, cats, and more
Even though this interview was recorded before the recent Texas detections, the practical, boots-on-the-ground advice is exactly what Austin County livestock owners and animal lovers need right now.
Watch, learn, and share with every rancher, farmer, and pet owner you know.
✅ Report suspected cases right away, early detection is critical.
Links:
TAHC Screwworm Page: https://www.tahc.texas.gov/emergency/nws.html
USDA Screwworm Resources: https://www.aphis.usda.gov/animals/animal-health/livestock-and-poultry-disease/stop-screwworm
Texas A&M AgriLife Extension: https://agrilifeextension.tamu.edu/new-world-screwworm/
For those interested:
✅ Report suspected cases right away, early detection is critical.
Links:
TAHC Screwworm Page: https://www.tahc.texas.gov/emergency/nws.html
USDA Screwworm Resources: https://www.aphis.usda.gov/animals/animal-health/livestock-and-poultry-disease/stop-screwworm
Texas A&M AgriLife Extension: https://agrilifeextension.tamu.edu/new-world-screwworm/