Overview

• Mexico confirmed a New World screwworm case in Sabinas Hidalgo, Nuevo León, detected in an eight‑month‑old cow moved from the south near the busy Monterrey–Laredo corridor.
• USDA called the finding the most significant threat yet to U.S. herds and halted imports of cattle, buffalo and horses from Mexico.
• U.S. surveillance has intensified with more than 8,000 monitored traps across Texas, Arizona and New Mexico and about 13,000 samples analyzed, with no screwworm flies detected to date.
• SENASICA said the infestation was caught early, the infected animal was treated, and the full shipment received ivermectin to reduce risk, in line with binational protocols.
• USDA vowed not to rely on Mexico, outlining a five‑step response centered on expanded sterile‑fly production and releases, while President Claudia Sheinbaum urged decisions be based on technical criteria as industry losses near $1.3 billion with some 650,000 head stalled.