[ORGANIZATION]
Cochliomyia hominivorax
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Situations
US‑Mexico screwworm outbreak expands
121 clusters · 397 sources · last updated
Latest: Screwworm outbreak spreads across Mexico, triggering US cattle import bans
The New World screwworm (Cochliomyia hominivorax) continues to spread across the U.S.–Mexico border. USDA‑APHIS confirmed the first domestic case in over 50 years on 3 June 2026 in a calf near La Pryor, Texas, and by the
Warble fly outbreak spreads across Mexico
2 clusters · 26 sources · last updated
Latest: Mexico's screwworm (gusano barrenador) outbreak spreads to livestock and pets
In mid‑July 2026 the state of Chihuahua reported Mexico’s first confirmed case of the cattle warble fly (gusano barrenador) in a calf, prompting a sanitary containment protocol that established a 20‑km core zone and a 40
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Mexico Mandates Health Certificate for Pets Entering from US
[HEALTH] · 6 sources ·