On January 30, 2026, Texas Governor Greg Abbott issued a statewide disaster declaration in response to the growing threat of the New World screwworm, a parasitic fly advancing north from Mexico. The move empowers Texas agencies to activate emergency resources to protect the state's multi-billion-dollar livestock and wildlife sectors.

A looming agricultural threat at the southern U.S. border has prompted swift state and federal action. On Thursday, Texas Governor Greg Abbott declared a statewide disaster to preemptively combat the New World screwworm (NWS), a parasite with a long history of devastating livestock and wildlife.

Though no active cases have been reported in Texas or the broader U.S., the screwworm has re-emerged aggressively in Mexico, with 870 confirmed animal cases and 24 human hospitalizations as of January 20, 2026. Notably, eight cases are in Tamaulipas, the Mexican state directly bordering Texas-escalating concerns of cross-border transmission.

Governor Abbott emphasized the urgency: "This destructive parasite threatens Texas livestock and wildlife. We won't wait for the screwworm to cross the border." The declaration enables the Texas New World Screwworm Response Team to fully mobilize all state resources, including agencies like the Texas Animal Health Commission and Texas Parks and Wildlife Department.

In parallel with Texas' proactive stance, the USDA's Animal and Plant Health Inspection Service (APHIS) has launched the New World Screwworm Grand Challenge, pledging up to $100 million in funding. This federal initiative is focused on:

• Enhancing sterile fly production to disrupt breeding cycles

• Strengthening early detection and response protocols

• Supporting projects that protect trade and animal health across U.S. borders

This federal-state coordination reflects rising awareness that supply chain vulnerabilities, livestock biosecurity, and cross-border cooperation are crucial in defending American agriculture.

Texas Agriculture Commissioner Sid Miller praised the Governor's decision, stating: "The governor's disaster declaration gives his task force the authority and speed needed to confront this growing threat." Miller confirmed the Texas Department of Agriculture (TDA) has been conducting heightened surveillance and emergency preparedness drills since late 2025.

Likewise, Carl Ray Polk Jr., President of the Texas & Southwestern Cattle Raisers Association, supported the action: "This declaration ensures our state can deploy every available tool to prevent an incursion that would devastate our cattle herds."

Polk stressed that the priority remains pushing the screwworm back toward its original habitat, the Darién Gap, in Central America-a zone where the pest was previously contained.

The New World screwworm (Cochliomyia hominivorax) is a fly whose larvae feed on living flesh. Historically eradicated from the U.S. in 1982 through sterile insect release programs, its return would spell disaster for livestock productivity, animal welfare, and export markets.

Infestations can lead to:

• Severe wounds and infections in cattle, horses, deer, and pets

• Losses in meat and dairy yields

• Escalating veterinary and control costs

• Trade restrictions on U.S. beef exports

With Texas producing 13% of U.S. cattle, any outbreak could reverberate through national supply chains, consumer prices, and international trade relationships.

USDA and state agencies are reactivating surveillance networks, especially in South Texas ranchlands and wildlife corridors. Meanwhile, sterile fly production-once central to the historic eradication-has been scaled up in USDA facilities in Panama and Texas to match the emerging threat.

Innovative containment technologies, supported by the Grand Challenge, are also being explored, including drone-based release of sterile flies, genetic tracking of outbreaks, and AI-powered field monitoring.

This emergency places agricultural biosecurity and pest preparedness back on the policy agenda. The timing aligns with ongoing farm bill negotiations and raises new calls for increased funding for animal health programs and cooperative border pest surveillance.

With Mexico struggling to contain the outbreak, U.S. policymakers are closely watching not just the biology of the pest, but also bilateral response coordination, budget gaps, and long-term resilience strategies.