A worker walks through empty corrals at the Union Ganadera Chihuahua cattle import facility in Santa Teresa, New Mexico, on June 20, 2025. | Paul Ratje/Bloomberg via Getty Images A flesh-eating parasite that the United States spent decades eradicating, and even longer trying to keep at bay, has now shown up in Texas. Federal officials confirmed this week that New World screwworm, a fly whose larvae burrow into living tissue, had been found in a 3-week-old calf in Zavala County in Southwest Tex