Flesh-eating screwworm horror hits US cattle, but Trump’s USDA was ready to fight

The New World Screwworm (NWS) precocious was recovered successful American cattle and has gone from a menace moving northward to a adjacent and contiguous information for U.S. livestock producers. The astir effectual instrumentality against NWS is besides 1 of the simplest: releasing sterile flies that mate with chaotic screwworms and illness the colonisation implicit time. It is simply a proven strategy, but it requires planning, infrastructure, and planetary practice agelong earlier a situation reaches our border.

As a enactment harvest husbandman who has raised cattle and served arsenic the U.S. Ambassador to the United Nations Agencies for Food and Agriculture from 2019-2021, I person seen firsthand however rapidly cultivation pests tin endanger nutrient systems and agrarian economies. Given that screwworm is present here, it is much important than ever for experts to beryllium factual astir the concern and recognize the decisive actions this Administration has taken and volition proceed to take.

Transboundary carnal illness threats tin devastate some agriculture and economies. During my clip successful Rome, the Desert Locust tore done eastbound Africa. Working done the U.N. Food and Agriculture Organization, we coordinated an planetary response, secured funding, and developed semipermanent containment strategies.

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Cochliomyia hominovorax is the superior screwworm alert successful the New World. Larvae are obligate parasites of surviving soma successful humans and different mammals.  (USDA)

We fought akin situations with the African Swine Fever successful China and Southeast Asia, arsenic good arsenic the Fall Armyworm successful Africa. When biosecurity fails astatine scale, economical devastation, years of recovery, and imperishable scars tin beryllium near connected each community. Protecting nutrient systems and responding to threats requires swift enactment and coordination betwixt agencies and affected nations.

The New World Screwworm is not a caller threat, and it surely did not drawback anyone off-guard. The U.S. Department of Agriculture Secretary Brooke Rollins began the U.S. effect to the NWS astatine the commencement of her tenure past year. Through decisive leadership, assertive action, and a science-based response, the Administration and its partners took preemptive actions and kept the NWS retired of the United States for much than a twelvemonth past adjacent the astir pessimistic projections. Secretary Rollins has continually invested successful the due tools and technologies that are indispensable to support our farmers, ranchers, and nutrient supply.

Cochliomyia hominivorax, the New World screwworm fly, oregon screw-worm for short, is simply a taxon of parasitic alert that is good known for the mode successful which its larvae (maggots) devour the surviving tissue. (Getty Images)

For example, much than a twelvemonth ago, connected April 26, 2025, Secretary Rollins took enactment to guarantee practice betwixt Mexico and the U.S. against the NWS. Working with Mexican officials, Rollins opened operational airspace successful Mexico for USDA to merchandise sterile flies, reduced import duties connected needed equipment, enactment successful spot surveillance practices, and established wide planetary and home connection connected the threat. As NWS continued moving northward done Mexico successful May, the USDA worked successful coordination with Customs and Border Patrol to unopen down confederate ports of introduction to livestock moving from oregon transiting done Mexico.

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Beyond antiaircraft measures, successful the weeks following, the USDA invested successful infrastructure successful the U.S. and Mexico to summation sterile alert production. This concern is captious due to the fact that sterile alert releases stay the astir effectual mode to trim NWS populations. The USDA worked with the authorities of Texas and Governor Abbot to unfastened an $8.5 cardinal sterile alert dispersal installation successful South Texas. Stationed connected Moore Air Force Base, the installation volition soon merchandise up to 300 cardinal sterile flies per week. In Mexico, the USDA invested different $21 cardinal to amended a sterile alert accumulation tract successful confederate Mexico. With capable sterile alert accumulation and unfastened aviation lines successful Mexico, the USDA acceptable the U.S. successful a beardown presumption to dilatory the dispersed of NWS.

Cowboys propulsion a cattle retired of its spot to a veterinarian inspection astatine a ranch that exports livestock to the U.S., successful Zamora, bluish Mexico, Monday, July 28, 2025. (AP Photo/Fernando Llano) (AP Photo/Fernando Llano)

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The medication has besides ensured that the combat against NWS is afloat coordinated betwixt each levels of government. In January 2026, the USDA, on with the Department of Homeland Security, Center for Disease Control, and the Department of the Interior, organized a two-part New World Screwworm simulation addressing modes of spread. The simulation had implicit 250 attendees representing decision-makers from federal, state, local, and tribal authorities. The medication understands that statement and communal enactment among partners is indispensable to effect efforts erstwhile warring a nationwide threat.

The Trump administration, done USDA and spouse agencies, has worked tirelessly and efficaciously since aboriginal 2025 to dilatory and halt the dispersed of NWS earlier it reaches the U.S. It is inactive excessively aboriginal to cognize the afloat scope of this threat, but experts should absorption connected strengthening proven effect efforts alternatively than advocating untested alternatives. No 1 was caught-off defender by the accomplishment of the NWS successful the U.S., and the, the administration’s actions person been measured, diligent, and appropriate. The preparations already made and the occurrence successful delaying NWS's accomplishment show the lengths President Trump’s medication volition spell to support American farmers and agriculture.

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