Travis County Declares Disaster Over Screwworm Threat Before First Case Appears

Travis County Judge Andy Brown signed a local disaster declaration Friday morning that, unusually, addresses a threat that has not yet materialized. The document, announced at a press conference at the Travis County Emergency Operations Center, positions the Austin metropolitan area to respond rapidly should the New World screwworm parasite advance northward from its current foothold in South Texas.

No cases have been detected in Travis County. Brown emphasized repeatedly that the declaration serves purely as a preparatory measure, designed to eliminate bureaucratic delays should the flesh-eating parasite eventually reach the county's livestock or wildlife populations.

"This declaration is a proactive measure that allows us to better coordinate resources, strengthen communication with our state and federal partners, and ensure we're prepared to respond quickly if this pest is detected in our region," Brown stated. "We're not waiting for a crisis to get our house in order."

Caldwell County Judge Hoppy Haden joined Brown in signing a parallel declaration, creating a coordinated front across the Interstate 35 corridor south of Austin. The dual declarations represent the first time counties without confirmed screwworm cases have taken such formal protective action, signaling how seriously Texas officials view the expanding threat.

The New World screwworm, a parasitic fly whose larvae feed on living tissue, has now been confirmed in eleven cases across Texas and New Mexico since USDA's Animal and Plant Health Inspection Service identified the first infected calf in Zavala County on June 3. The parasite, eradicated from the United States in the 1960s after decades of effort, reappeared this spring as it moved northward from Mexico, where it has persisted in wildlife populations.

For Travis County, which maintains significant cattle ranching operations in its outlying areas and hosts the state capital's political infrastructure, the declaration unlocks several practical advantages. Emergency management personnel can now access pre-positioned state and federal resources without awaiting separate authorization for each expenditure. Veterinary inspection stations can be established on accelerated timelines. Communication protocols with the Texas Animal Health Commission and USDA can proceed through emergency channels rather than standard administrative pathways.

The county's approach reflects lessons learned from observing the response in South Texas, where the first cases triggered a scramble to deploy diagnostic equipment, train inspectors, and establish quarantine protocols simultaneously. By declaring the emergency in advance, Travis County hopes to have these systems operational before they are needed.

Texas A&M AgriLife Extension has already begun adapting its educational programming for Travis County audiences, preparing livestock producers and wildlife managers to recognize the telltale signs of screwworm infestation. The parasite typically enters wounds—whether from branding, castration, barbed wire injury, or natural causes—and deposits eggs that hatch into larvae within hours. Left untreated, infestations can kill otherwise healthy animals within days.

The sterile insect technique that ultimately eliminated screwworms from North America during the mid-20th century remains the primary control method. USDA releases millions of sterilized male flies weekly along the Mexico border, where they mate with wild females and prevent reproduction. However, the current outbreak has overwhelmed this barrier in localized areas, prompting emergency expansion of production capacity at the Knipling-Bushland laboratory in Kerrville.

For Austin-area residents who do not keep livestock, the declaration has minimal immediate impact. The parasite poses no direct threat to humans and does not spread between animals through casual contact. Pets can become infected if they have open wounds and exposure to adult flies, but prompt veterinary treatment is typically curative.

The economic stakes, however, extend well beyond ranching operations. Texas maintains the largest cattle population of any state, and a widespread screwworm infestation could trigger movement restrictions affecting the entire supply chain, from breeding operations to feedlots to processing facilities. The state's 1960s eradication campaign cost hundreds of millions in inflation-adjusted dollars; preventing re-establishment is vastly cheaper than eliminating an entrenched population.

Judge Brown indicated that the declaration would remain in effect indefinitely, with regular reassessment as the situation evolves. Should screwworm cases continue spreading northward, additional Central Texas counties will likely follow Travis and Caldwell's lead in formalizing their preparedness.

For now, county emergency management staff are conducting tabletop exercises and reviewing inventory lists, rehearsing a response they hope never to activate. The flies, meanwhile, continue their slow northward advance through the brush country, indifferent to the paperwork being prepared in their path.