Texas screwworm cases by county, according to the U.S. Department of Agriculture.(kbtx)
New World Screwworm Spreads Across Texas, Threatening Livestock and Beef Prices
Outbreak confirmed in 31 Texas locations; 21 counties under movement restrictions.
By Nicole Marino – Published: Jul. 8, 2026
BRYAN, Texas (KBTX) – A flesh-eating parasite has been confirmed in at least 31 locations across Texas. State and federal officials are working to contain the outbreak, as it threatens the state’s multibillion-dollar cattle industry.
The United States Department of Agriculture has confirmed 32 new World screwworm infestations in the United States: 31 in Texas and one in New Mexico. Cases span 12 Texas counties and 23 separate premises. The most recent detection, a sheep in Crockett County, was confirmed July 3.
Movement restrictions in place
Twenty-one Texas counties are currently under movement restrictions.
All southern ports of entry are currently closed to livestock trade. Infected animals cannot be sold or processed for meat.
Economic impact
The Texas cattle industry generates approximately $41 billion a year. State officials said the outbreak is threatening the industry and could drive up beef prices at grocery stores.
Nearly 28,000 cases of New World screwworm have been detected in Mexico since November 2024, and the parasite has since spread into Texas.
What officials are urging
Gov. Greg Abbott said livestock owners should take immediate steps to protect their animals.
“Here’s what Texans can do right now,” Abbott said. “Check your animals daily, check for any wounds, even small wounds like tick bites on navels or newborns or other openings. Treat wounds promptly and work to reduce fly populations around the operations.”
Abbott also urged anyone who suspects an infection to contact state authorities without delay.
“Report immediately any suspicion of New World screwworm and wounds to the Texas Animal Health Commission,” Abbott said. “Anyone can report.”
Officials said livestock and pet owners should watch for wounds that are getting worse instead of better, or wounds with visible larvae and call the Texas Animal Health Commission at the first sign of concern.
Texas Animal Health Commission, Central Office in Austin: 512-719-0700.
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