New World Screwworm Detected in Hunter-Harvested Elk in Pecos County

New World Screwworm Detected in Hunter-Harvested Elk in Pecos County

Oct. 21, 2026

Media Contact: TPWD News, Business Hours, 512-389-8030

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TPWD Encourages Hunter Harvest Inspection, Reporting of Animals Affected by New World Screwworm

AUSTIN - On Oct. 21, the Texas Parks and Wildlife Department (TPWD) received confirmation of a detection of New World screwworm (NWS) in a hunter-harvested female elk in Pecos County. A sample was collected from the elk and was identified and confirmed as NWS at the ARS Knipling-Bushland U.S. Livestock Insects Research Laboratory in Kerrville.

This detection highlights the critical role hunters, landowners, outdoor enthusiasts and wildlife professionals play in helping detect and manage the spread of NWS.

"We encourage all hunters and landowners to be vigilant for signs of New World screwworm while they are out in the field this season," said Alan Cain, Wildlife Division Director. "The partnership between TPWD biologists and local hunters and landowners expedited the identification and confirmation of this new detection."

The Texas Animal Health Commission (TAHC) will modify a previously established infested zone. The U.S. Department of Agriculture (USDA) and TPWD are conducting additional wildlife surveillance in the area.

Hunter Harvest Inspection

With the kick-off of hunting season across Texas, all hunters are encouraged to inspect their harvest before field dressing or moving the carcass.

While in the field, hunters should look for animals that may be showing signs of infestation which include:

• Irritated or depressed behavior
• Loss of appetite
• Head shaking
• Smell of decaying flesh
• Presence of fly larvae (maggots) in wounds
• Isolation from other animals or people

Once an animal is harvested, hunters should be sure to inspect:

• Eyes, ears, nose, mouth, genitalia and any mucous membranes.
• Run your hands along the body of the animal and check the feet and between the toes looking for any wounds that might have a foul smell or maggots.

A video on how to inspect your harvest for NWS is available online.

Hunters and landowners can find additional information in the TPWD New World Screwworm Guide for Hunters and Landowners.

Early detection and reporting is critical. Report all suspected and confirmed cases of NWS immediately.

If you suspect a wild animal has an NWS infestation, contact your local TPWD wildlife biologist or call 512-389-4505.

Report suspected cases in livestock and companion animals: TAHC - Region Office or the Veterinarian on Call 1-800-550-8242.

For more information and resources please visit screwworm.texas.gov.