Overview
- Mexico’s animal-health authority recorded 698 active Gusano Barrenador del Ganado cases as of December 29, with 409 in cattle and concentrations in Oaxaca (168), Veracruz (147), Yucatán (137) and Chiapas (130).
- SENASICA confirmed the first case in Tamaulipas, a newborn calf infected via an umbilical wound, marking the most northern detection and roughly 306 kilometers from McAllen, Texas.
- The Group for Agricultural Market Consulting warned the Tamaulipas case could delay the resumption of U.S. imports of Mexican cattle, which have been restricted since May.
- Authorities report dispersing about 4 billion sterile flies this year and say a renovated Metapa, Chiapas facility is slated to begin producing up to 100 million sterile flies per week in the first half of 2026.
- Mexico estimates 700,880 head of live cattle were not exported to the U.S., representing roughly $642 million in losses, while the USDA has announced $21 million to upgrade sterile-fly production capacity.