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First Screw-Worm Fly Cases Confirmed in Querétaro and Guanajuato, Targeted Controls Deployed

Authorities emphasize focused surveillance over blanket quarantines.

Overview

  • Querétaro confirmed its first case in a bovine from Landa de Matamoros, prompting a 20‑kilometer sanitary perimeter centered on La Lima with field inspections across nearby communities.
  • Guanajuato reported its first case in a goat at a farm in Guadalupe del Monte, Apaseo el Grande, with sanitary protocols activated and inspections launched across the Laja‑Bajío region.
  • Local officials in Querétaro are conducting site visits in areas including Mesa del Jagüey and Cerro de San Agustín to rule out additional cases and brief producers on reporting and treatment steps.
  • Guanajuato authorities said ranches will remain open under biosecurity protocols as producers are urged to check animals, clean and treat wounds, and report suspected myiasis promptly.
  • National surveillance remains heightened as Senasica notes 995 active cases countrywide, including 19 in 11 Tamaulipas municipalities with detections extending to some domestic dogs.