Abbott Pressures Feds In Biosecurity Standoff

New World screwworm has crossed into Texas, and federal officials are racing to stop a pest that can wreck livestock fast.

Quick Take

USDA confirmed a New World screwworm case in a Texas calf in Zavala County.^[2]
USDA said it found no further detections at the time of its notice.^[2]
Federal agencies are using quarantines, movement controls, surveillance, and sterile fly releases.^[2]^[7]
CDC says there is no immediate risk of infestation to people in the United States.^[7]

Texas Case Triggers Fast Federal Response

The United States Department of Agriculture confirmed New World screwworm in a three-week-old calf in Zavala County, Texas.^[2] The agency said larvae were found in the animal’s umbilical area and that there were no further detections at the time of the announcement.^[2] That matters because screwworm larvae feed on living tissue and can turn a small wound into a serious veterinary emergency.^[7]

Officials responded with a containment plan meant to keep the pest from spreading deeper into the country.^[2] USDA said it set up a 20-kilometer infested zone, began quarantines, imposed movement controls, increased trapping, and sped up sterile fly releases in the area.^[2] USDA also said the food supply is safe and that screwworms do not infest meat, fruits, vegetables, or other food sources.^[2]

Why Ranchers Are Watching This So Closely

New World screwworm is a parasite that attacks warm-blooded animals through open wounds.^[6]^[7] The Texas A&M AgriLife Extension Service says it can also infest human tissue, though that is rare, and that infected wounds can worsen fast if they are not treated.^[6] For ranchers, that means even a small livestock case can bring big losses if the fly gets a foothold.^[6]^[7]

The concern is not just Texas. CDC says Mexico and countries in Central America have reported more than 171,700 animal cases and more than 1,960 human cases since the outbreak re-emerged there.^[7] CDC also says the fly has not been detected in the United States and that there is no immediate risk of infestation to people.^[7] That language supports a narrow reading of the current human threat, even as animal surveillance stays urgent.^[7]

Abbott, USDA, and Border Biosecurity Pressure

Texas officials have treated the case as a warning, not a one-off headline.^[8] Governor Greg Abbott has pushed a stronger state response, while USDA has expanded control efforts along the border and inside the quarantine zone.^[2]^[8] The political fight is easy to see: ranchers want action now, not after the pest spreads, and federal agencies know delay could cost far more later.^[2]^[7]^[8]

The New World screwworm has gotten political. As Gov. Greg Abbott elevated the state response, his Democratic opponent Gina Hinojosa renewed her call for hearings. https://t.co/26ZmCr1XxN

— FOX 7 Austin (@fox7austin) June 9, 2026

The latest USDA status page shows the situation is still moving, with more confirmed detections listed after the first Texas case.^[5] USDA says some cases within 400 miles of the border, but outside the dispersal area, do not raise the risk to the United States.^[5] At the same time, the agency continues releasing millions of sterile flies each week and closing southern ports of entry to livestock trade.^[5] That is a hard-line response, and it shows the government still sees this as a live border biosecurity fight.^[5]^[7]

What Readers Should Watch Next

The key question is whether the Texas case stays contained or becomes a wider livestock problem.^[2]^[5] USDA says it is tracking each new case, using surveillance and modeling, and adjusting its response as new information comes in.^[5] If the pattern remains limited, the controls may work as intended. If detections keep rising, pressure will grow for even tougher movement limits and faster eradication steps.^[2]^[5]^[7]