The United States has reported its first confirmed human case of the New World screwworm, a flesh-eating parasite, in Maryland. This rare and alarming case is linked to recent travel from El Salvador, prompting the CDC to issue a warning. The screwworm, known for its destructive effects on livestock, has been detected in a person for the first time in decades, raising concerns about its potential spread and impact on both human health and the cattle industry. Emergency measures are being implemented, and health officials are urging vigilance among residents, especially in areas like Texas, where cattle stocks may be at risk.