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[SITUATION] · [QUIET] · [HEALTH]

2 clusters · 6 sources · 1 days · First seen · Last updated

Mexico myiasis fly outbreaks

Overview

In late July 2026 Mexican health officials confirmed a third human case of botfly‑caused myiasis in Jalisco, involving a 70‑year‑old woman who recovered after prompt treatment. The same municipality reported the first confirmed botfly infection in cattle, prompting the establishment of a 20‑km sanitary fence and additional protocols to protect livestock, pets, and wildlife.

The following day, veterinary experts issued preventative guidance for screwworm fly (Cochliomyia hominivorax) infestations in Yucatán. The advice emphasized regular livestock wound inspections, immediate cleaning and treatment of any injuries, and rapid reporting to zoosanitary authorities. The guidance highlighted that the screwworm fly, while primarily affecting cattle, can also infest other domestic and wild animals and, rarely, humans.

Together, the reports illustrate a growing focus by Mexican authorities on monitoring and controlling myiasis‑causing flies across both human health and animal‑health sectors, implementing containment measures, and disseminating preventive information to producers and the public.

Entities

Secretaría de Ciencia, Humanidades, Tecnología e Innovación (Secihti) · bovine livestock · Cochliomyia hominivorax · Abdiel Martín Park · Universidad Autónoma de Yucatán

Timeline

  1. 17 days ago

    [HEALTH] 2 sources
    Screwworm Fly Infestation Prevention Guidance Issued in Yucatán, Mexico

    Veterinary officials in Yucatán advise livestock owners to promptly inspect and treat animal wounds to prevent screwworm fly (Cochliomyia hominivorax) infestations that can affect cattle and other animals.

  2. 18 days ago

    [HEALTH] 4 sources
    Mexico reports third human botfly case and first livestock infection

    Mexico reported its third human botfly myiasis case in Jalisco and the first livestock infection in Cuauhtémoc, prompting treatment of the patient and sanitary measures for cattle.

Sources

aztecajalisco.com · diario.mx · eltiempomx.com · estamosaqui.mx · lucesdelsiglo.com.mx · solyucatan.mx