Texas Emergency Over Flesh-Eating Maggots

A flesh-eating livestock parasite once beaten by American science has slipped back across our southern border, and the fight to keep it from crippling U.S. ranchers is now on the Trump administration’s doorstep.

Story Snapshot

The New World screwworm has been confirmed in Texas cattle for the first time in decades, threatening herds and rural livelihoods.^[1]
Federal and state teams are rolling out sterile-fly releases, checkpoints, and movement controls, but full eradication could take more than a year.^[2]
Experts say the immediate risk to people is low and the food supply is safe, yet the economic danger to ranchers is very real.^[3]
The outbreak follows years of spread through Central America and Mexico, raising hard questions about border control and past policies.^[1]

What Exactly Is This Flesh-Eating Screwworm Threat?

The New World screwworm is a parasitic fly whose larvae eat the living flesh of warm-blooded animals.^[7]^[20] Female flies lay eggs in fresh wounds on cattle, horses, wildlife, and pets. When the eggs hatch, hundreds of maggots dig deeper into the tissue, turning a small cut into a gaping, foul-smelling wound that can kill an animal in days if ranchers do not act fast.^[18]^[20] This pest was once eradicated from the United States by the 1960s using sterile insect releases, and its return now signals a serious breach in our biosecurity defenses.^[21]

The current outbreak started with a confirmed case in a three-week-old calf in Zavala County, Texas, near the border.^[1]^[15] Larvae were found in the calf’s navel, a prime target because newborns have vulnerable tissue.^[1]^[3] Since then, federal updates and local reports say more animal cases have been confirmed in South Texas, and Texas has declared an emergency as numbers rise.^[9]^[11]^[16] Scientists warn that Texas, with its huge cattle industry and warm climate, is one of the most suitable regions for screwworm to take hold if early control efforts fail.^[2]

How Is The Trump Administration Responding – And Is It Enough?

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service, working under the Trump administration, has moved to contain and eradicate the parasite using a playbook built from past success.^[1] Actions include intensive surveillance on the ground, quarantine zones, animal checkpoints, and rapid deployment of sterile flies that mate with wild screwworms and block reproduction.^[1]^[2]^[7] Texas officials, federal veterinarians, and wildlife teams are coordinating fly releases from both ground and air and urging ranchers to report any suspect wounds immediately so cases are not missed.^[2]^[8]

Some state leaders argue the federal response should have been faster and more aggressive as the outbreak moved north through Mexico.^[5]^[12]^[18] They point out that screwworm has already caused more than a hundred thousand animal cases and thousands of human cases in Central America and Mexico since 2023.^[1]^[13] The Trump administration did support import suspensions for high-risk livestock from Mexico and backed construction of a new sterile-screwworm production facility in Texas to increase fly supply.^[2]^[3]^[12] Still, the reality is clear: once this parasite crosses the line, eradication is a long, costly grind that tests rural communities, markets, and government focus.

What Does This Mean For Ranchers, Families, And Food Security?

For everyday Americans, especially in farm country, the key questions are health and food safety. Federal health guidance stresses that the immediate risk to people in the United States is low and localized to areas where screwworm flies are present.^[3]^[7] There have been no locally acquired human infestations in this outbreak so far, and the parasite does not infest grocery store meat, fruits, or vegetables.^[1]^[17] Instead, the danger sits squarely on the backs of cattle, sheep, goats, and wildlife that feed rural economies and family freezers.

A New World Screwworm health alert has been issued near Taylor County.

Cases have been confirmed across several Texas counties and are getting closer to home.

Now is the time to check your animals and stay informed. Share this with anyone who has livestock or outdoor pets. pic.twitter.com/ZQsM0k9ydk

— Abilene Health Dept (@AbileneHealth) June 23, 2026

Economically, the stakes are high. Texas experts estimate that a major screwworm invasion could cost over $2 billion to the cattle industry and $9 billion to hunting and wildlife just in that one state.^[12] Historical data from the last century show the pest once caused devastating losses before eradication.^[18]^[26] Infected animals suffer intense pain, deep wounds, and secondary infections; untreated, many die.^[18]^[20] That means more vet bills, lost calves, tighter margins, and potential shocks to beef supplies if herds in key regions take heavy hits.^[3]^[26]

What Should Patriots In Farm Country Do Now?

Today, the most important line of defense is local vigilance. Federal and state agencies are telling ranchers, landowners, and pet owners in affected areas to check animals regularly for draining wounds, bad odors, or visible maggots, especially around navels, ears, branding marks, and other injuries.^[1]^[4]^[20] Any suspect animal should be isolated, not moved or sold, and reported at once to a veterinarian, the Texas Animal Health Commission, or U.S. Department of Agriculture veterinary services so larvae can be confirmed and treated.^[4]^[8]^[20] Quick treatment with cleaning, larvicide, and wound care can save animals and slow spread.^[8]^[20]

For families, basic steps help keep risk low. Health officials advise keeping all human and animal wounds clean and covered, using window screens or nets where flies may be present, and seeking medical care immediately if anyone notices maggots or a strange, non-healing sore.^[3]^[13] Travelers to outbreak regions in Central America and Mexico should be extra careful and report any suspicious lesions when they return home.^[3]^[13]^[14] This is not a moment for panic, but it is a moment for steady attention, support for our ranchers, and insistence that Washington keeps border biosecurity, not woke distractions, at the top of its priority list.