USDA Says 2nd Screwworm Case Detected in Texas

The case was detected within the ‘established movement control zone,’ the USDA stated.

Cattle are herded in a stable in Hamilton, Texas, on June 5, 2026. Brandon Bell/Getty Images

The U.S. Department of Agriculture (USDA) said on Friday that a second case of the flesh-eating New World screwworm has been detected in Texas.

The parasite was found in a one-month-old calf in Zavala County, Texas, just 5.6 miles away from the location of the first confirmed case, which involved a three-week-old calf in South Texas.