New World Screwworm Reaches the US, Deepening Mexico’s Cattle Crisis

Economy · Agriculture Key Facts —First US Case in Decades The USDA confirmed the first U.S. detection of New World screwworm in decades on June 3, 2026, in a bovine in Zavala County, Texas, signaling the parasite has spread north. —Border Remains Mostly Closed The U.S. has kept its border mostly closed to Mexican live…