The U.S. Department of Agriculture (USDA) has confirmed the first case of the New World screwworm in a cow in the United States in approximately 60 years, marking a significant agricultural concern. Detected in a three-week-old calf in Zavala County, Texas, this case represents the first instance since the pest was eradicated in the U.S. in 1966. New World screwworms are parasitic flies that lay eggs in open wounds, leading to painful infections. The USDA has initiated immediate containment measures, including establishing a 20-kilometer quarantine zone around the infection site and releasing sterile flies to curb further spread. Experts had anticipated the pest's return due to its northward migration from Central America, where it causes substantial economic losses. While infections in humans are rare, those with open wounds in endemic areas are at risk. The CDC recommends keeping wounds clean and covered, and seeking medical help if infection is suspected.