(Edinburg, TX) – U.S. Secretary of Agriculture Brooke Rollins launched an $8.5 million sterile New World screwworm (NWS) fly dispersal facility in South Texas and announced a sweeping five-pronged plan to enhance USDA’s already robust ability to detect, control, and eliminate this pest. These urgent actions are necessary to finish the fight against NWS and protect the United States.

NWS is a devastating pest that causes serious and often deadly damage to livestock, wildlife, pets, and in rare cases, humans. While NWS has been eradicated from the United States for decades, recent detections in Mexico as far north as Oaxaca and Veracruz, about 700 miles away from the U.S. border, led to the immediate suspension of live cattle, horse, and bison imports through U.S. ports of entry along the southern border on May 11, 2025.

“The United States has defeated NWS before and we will do it again,” said Secretary Rollins. “We do not take lightly the threat NWS poses to our livestock industry, our economy, and our food supply chain. The United States government will use all resources at its disposal to push back NWS, and today’s announcement of a domestic strategy to bolster our border defenses is just the beginning. We have the proven tools, strong domestic and international partnerships, and the grit needed to win this battle.”


Key Facets of USDA’s Five-Pronged Plan to Address New World Screwworm


1. Stop the Pest from Spreading in Mexico and Ensure We Are Full Partners in Eradication

  • USDA’s recent $21 million expenditure went toward renovating an existing fruit fly production facility in Metapa, Mexico, which will provide an additional 60-100 million sterile flies a week to stop the spread, on top of the over 100 million already produced in Panama. This will result in at least 160 million flies per week.
  • Over the last two weeks, USDA conducted a robust, in-person audit of Mexico’s animal health controls and will maintain close continual monitoring of these aspects moving forward and will make continuous improvements. These in-person visits have allowed a unique opportunity for APHIS to see first-hand the challenges and opportunities in Mexico toward combating NWS.
  • USDA is working closely with Mexico to improve its surveillance and detection of NWS, which includes but is not limited to regularly providing traps, lures, and technical expertise to Mexico.

2. Protect the U.S. Border at All Costs

  • USDA will support Mexico’s strategic trapping along our shared border and ensure we receive regular reporting as an early warning intervention.
  • USDA will escalate communications and public outreach along the U.S.-Mexico border to create a “barrier zone of vigilance” and boost as close to real time as possible awareness of this pest.
  • APHIS cattle fever tick riders in collaboration with U.S. Customs & Border Protection and with state partners will intercept and treat stray and illegally introduced livestock.

3. Maximize Our Readiness

  • USDA will partner with state animal health officials to update and finalize emergency management plans and support federal, state, and local responders in training on and practicing for a potential response.
  • USDA will ensure we have sufficient NWS treatments and will work to remove any federal regulatory hurdles for their use.

4. Take the Fight to the Screwworm

  • Because sterile NWS flies are one of the most important and proven tools we have for eradicating the pest, USDA will immediately begin building a sterile insect dispersal facility at Moore Air Base, set to be completed in 2025. This facility will have the capability to disperse sterile flies in Northern Mexico.
  • USDA is exploring all options to eradicate NWS, which includes potential expenditures in new technologies, new science, including possible plans to move forward with the design process of a domestic sterile fly production facility to compliment the new dispersal facility at Moore Air Base which has also been identified as the proposed location. The facility could boost domestic sterile fly production by up to 300 million flies per week and could complement current production that already exists in Panama and Mexico.

5. Innovate Our Way to Eradication

  • USDA is pursuing innovative research to improve sterile insect technology, exploring development of better traps and lures, exploring next generation NWS treatments, and assessing the potential use and practicality of additional strains or genetically modified versions of the pest as well as e-beam and other radiation technology for the production of sterile flies.
  • USDA will strengthen partnerships with land-grant universities in border states such as Texas, Arizona and New Mexico to facilitate local training, trap deployment, surveillance validation, and stakeholder outreach as an initial manner.

Additionally, to solicit input from stakeholders and to best inform the finalization of future plans, USDA will hold four public listening sessions to get feedback on the following topics: sterile fly production technology, eradication tools and technologies aside from sterile fly production, the benefits and barriers including timelines and costs of enhanced domestic vs international sterile fly production, and other innovative ideas. USDA has and remains committed to working in close coordination with our federal, state, local and private sector partners to defeat this pest once and for all.

“Texas is on the front lines of the threat posed by the New World Screwworm. Proactive measures like this dispersal facility are a critical step to ensure our state and nation are prepared to respond swiftly and effectively to this challenge. We are grateful for the Trump Administration and Secretary Rollins’ continued support of Texas in safeguarding the economic vitality of our farming and ranching communities. We will continue to work with our federal partners to eliminate this threat,” said Governor Greg Abbott.

“I’m proud to partner with decisive leaders such as USDA Secretary Rollins and our Texas congressional delegation in combating the New World Screwworm. This is a significant threat, and it’s critical we stay ahead of it. Texas has historically been at the forefront of American agriculture, and we are prepared to assist Secretary Rollins and the USDA in protecting our livestock, economy, and food supply. I look forward to implementing a robust, effective plan to protect Texas agriculture from this dangerous pest,” said Commissioner of Agriculture Sid Miller.

“Texas Farm Bureau applauds U.S. Secretary of Agriculture Brooke Rollins for advancing the construction of a sterile insect production and distribution facility at Moore Air Base. This investment is a critical step in protecting Texas livestock, wildlife and our food supply from the devastating threat of the New World screwworm (NWS). As the screwworm threat has moved north from Panama into Mexico, Texas Farm Bureau made the establishment of a domestic sterile insect facility one of our highest priorities. A robust, science-based defense, anchored by a U.S.-based facility, is essential to combatting this destructive pest. We’re grateful to the Congressional leaders who have championed this effort and to USDA for its commitment to proactive, long-term solutions. We look forward to continued collaboration to ensure our producers, rural communities and consumers are protected from this threat,” said Texas Farm Bureau President Russell Boening.