Overview

• Mexico’s SENASICA confirmed an infected 8‑month heifer in Sabinas Hidalgo, roughly 70 miles from Texas, linked to a shipment from Minatitlán, Veracruz near the Monterrey–Laredo corridor.
• USDA measures include closing ports to Mexican cattle, bison and horses, monitoring more than 8,000 traps in Texas, Arizona and New Mexico, and analyzing about 13,000 samples with no flies detected.
• USDA Secretary Brooke L. Rollins called the threat a national‑security priority and warned the United States will act independently if necessary, with sterile‑fly releases under consideration.
• Mexican officials report the lot of 100 animals was fully inspected, the single case was treated and all cattle received ivermectin, with northern trap networks reporting no screwworm flies as joint protocols are applied.
• Trade fallout continues, with roughly 644,000–650,000 head not exported and losses estimated up to about $1.3 billion, while President Claudia Sheinbaum urges technical criteria for border decisions and producers call for mass sterile‑fly releases.