Flesh-Eating Screwworm Reappears in US: 5 Things to Know

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Flesh-Eating Screwworm Reappears in US: 5 Things to Know
Cattle graze near the U.S.-Mexico border wall in Nogales, Ariz., on Sept. 16, 2025. Charly Triballeau/AFP via Getty Images
Cattle graze near the U.S.-Mexico border wall in Nogales, Ariz., on Sept. 16, 2025. Charly Triballeau/AFP via Getty Images
Darlene McCormick Sanchez
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The U.S. Department of Agriculture (USDA) announced on June 3 that a three-week-old calf in Zavala County, Texas, near the Mexican border, had been infected by the New World screwworm.

Two days later, a second case of the flesh-eating New World screwworm was detected in a one-month-old calf in the same county, according to the department, just 5.6 miles away from the location of the first confirmed case.

Darlene McCormick Sanchez
Darlene McCormick Sanchez
Senior Reporter
Darlene McCormick Sanchez is an Epoch Times reporter who covers border security and immigration, election integrity, and Texas politics. Ms. McCormick Sanchez has 20 years of experience in media and has worked for outlets including Waco Tribune Herald, Tampa Tribune, and Waterbury Republican-American. She was a finalist for a Pulitzer prize for investigative reporting.