Overview

• Mexico’s animal health agency confirmed New World screwworm in an 8-month-old cow in Sabinas Hidalgo, Nuevo León, less than 70 miles from the U.S. border.
• The infected animal had recently been moved to a certified feedlot from southern Mexico, with the site located along the busy Monterrey–Laredo corridor.
• U.S. ports remain closed to imports of cattle, bison and horses from Mexico as officials work to contain the threat.
• Since July, nearly 8,000 traps and more than 13,000 samples have been screened across Texas, Arizona and New Mexico with no screwworm flies detected in the United States.
• The USDA’s five-pronged plan includes a $100 million effort and new sterile-fly infrastructure, with an $8.5 million dispersal facility at Moore Air Force Base slated for substantial completion by late 2025 and a larger production plant in planning; a recent U.S. human case was travel-linked to El Salvador, and residents are urged to check animals for signs of infestation.