Farms.com Home  › Ag Industry News

U.S. Steps Up Screwworm Prevention Efforts

U.S. Steps Up Screwworm Prevention Efforts
Feb 06, 2026
By Farms.com

Federal actions aim to protect cattle herds and stabilize beef prices nationwide

The United States government is increasing efforts to prevent the spread of the New World screwworm, a dangerous pest that poses a serious threat to livestock and food security. Lawmakers and federal agencies are working together to protect cattle herds and reduce potential economic damage to the agriculture sector. 

The New World screwworm is known for infecting livestock and causing severe harm, including death in cattle. If the pest spreads further north, it could significantly impact ranchers and lead to higher beef prices for consumers. Officials have stressed that prevention is critical, as the pest is close to U.S. borders but has not yet entered the country. 

Recent federal actions include legislation passed last year that supports funding for screwworm prevention programs. This law allows the government to invest in tools and infrastructure needed to stop the pest before it becomes established in the United States. These efforts are being led in coordination with the U.S. Department of Agriculture. 

One major step in the prevention plan is the development of a sterile fly production facility in South Texas. Planning is currently underway with support from federal agencies. Once built, the facility will be the only one of its kind in the United States. It will work alongside existing facilities in Mexico and Panama to control and eliminate screwworm populations using proven scientific methods. 

“Planning is currently underway with the U.S. Army Corps of Engineers to construct a domestic sterile fly production facility in South Texas. It will be the only U.S.-based sterile fly production facility and will work in tandem with facilities in Panama and Mexico to help eradicate this pest and protect American agriculture,” said U.S. Senator John Cornyn.  

“While the New World screwworm poses a direct threat to cattle ranchers [and] all of us who enjoy a good hamburger or a steak, I think this should be encouraging news. The fly has yet to land here in the United States, but it's close and we're taking active steps to prevent its continued northward spread,” said Cornyn. 

Officials remain confident that ongoing planning, leadership, and cooperation will allow the country to respond quickly if the pest approaches US borders. These proactive steps reflect a strong commitment to safeguarding the nation’s agricultural future. 

Read the related article: FDA Clears IVOMEC Use Against Screwworm. 

Photo Credit: gettyimages-pamwalker68


Trending Video

Stress as a Nutrient Thief - Dr. Sarah Pearce

Video: Stress as a Nutrient Thief - Dr. Sarah Pearce


In this episode of The Swine Nutrition Blackbelt Podcast, Dr. Sarah Pearce, Research Animal Physiologist with USDA ARS, explains why stress can act as a nutrient thief in pigs. She discusses gastrointestinal health, barrier integrity, inflammation, feed efficiency, stress interactions, and emerging biomarkers that may help predict performance challenges before they occur. Listen now on all major platforms!

Click here to read the full research article: https://academic.oup.com/af/article/1...

"Stress can steal calories and nutrients because energy normally used for growth is redirected toward immune activation, gut repair, and other costly survival responses."

Meet the guest: Dr. Sarah Pearce / sarah-pearce-phd-3a5881a5 earned her M.S. and Ph.D. in Nutritional Sciences from Iowa State University and currently serves as a Research Animal Physiologist with the USDA Agricultural Research Service. Her research focuses on gastrointestinal physiology, nutrition, stress biology, immune function, and productivity in pigs and poultry. Learn more from Dr. Sarah Pearce on the Swine Nutrition Black Belt Podcast, available on all major platforms.