At the Four Sixes Ranch, we are deeply committed to the health and well-being of our livestock and the sustainability of the ranching industry as a whole. With the recent resurgence of concern surrounding New World screwworms, we believe it is essential to provide accurate, science-based information to help livestock producers, veterinarians, and the general public understand this serious threat.
The resources listed below are intended to educate and inform. They include research-based insights, best practices for prevention and response, and the latest updates from trusted organizations. By sharing these materials, we hope to help answer questions, support preparedness efforts, and encourage proactive steps that protect both animals and livelihoods.
We appreciate your interest and vigilance—together, we can stay ahead of emerging animal health threats.
Resources on New World Screwworm
EMGuide-NewWorldScrewworm.pdf https://www.tahc.texas.gov/animal_health/feverticks-pests/EMGuide-NewWorldScrewworm.pdf
National Cattlemen’s Beef Association. “National Cattlemen’s Beef Association – New World Screwworm Resources.” Accessed June 24, 2025. https://www.ncba.org/education-resources/industry-updates-resources/new-world-screwworm-resources.
Ledbetter, Kay. “Texas A&M AgriLife Announces New World Screwworm Fact Sheet.” AgriLife Today (blog), May 20, 2025. https://agrilifetoday.tamu.edu/2025/05/20/texas-am-agrilife-announces-new-world-screwworm-fact-sheet/.
Merck Veterinary Manual. “Obligatory Myiasis-Producing Flies of Animals – Integumentary System.” Accessed June 24, 2025. https://www.merckvetmanual.com/integumentary-system/flies/obligatory-myiasis-producing-flies-of-animals.
US Department of Commerce, NOAA. “Climate.” NOAA’s National Weather Service. Accessed June 24, 2025. https://www.weather.gov/wrh/Climate?wfo=lub.
Report Template – v10 FAD PReP foreign disease preparedness &response planhttps://www.aphis.usda.gov/sites/default/files/nws_myiasis_disease_strategy.pdf
