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Mexico - New World Screwworm (NWS) outbreak 2025-2026

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  • #76

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    /https://en.wikipedia.org/wiki/Zacatecas
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    Translation Google
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    Screwworm reaches the border with Coahuila

    28/04/26

    Saltillo, Coahuila de Zaragoza – Authorities reinforce actions against health risk.

    The detection of an active case of cattle screwworm (CSM) in a bovine in the state of Zacatecas, just 20 km from the border with Coahuila, as well as the capture of specimens of the transmitting fly in the border area, places the state at high risk of registering cases.

    In an interview, the Secretary of Rural Development, Jesús María Montemayor Garza, reported that female flies of the species Cochliomyia hominivorax have been detected in traps installed along the border between Coahuila and Zacatecas. This makes the possible entry of the insect into the state by natural flight imminent, favored by the warm and humid weather conditions typical of the season.

    Given this situation, close coordination is maintained with the Ministry of Agriculture and Rural Development (SADER), through the National Service for Agrifood Health, Safety and Quality (SENASICA) and the Coahuila State Livestock Commission (CPA), as well as with the Coahuila Regional Livestock Union, the Committee for Livestock Development and Protection, and municipal governments. This collaboration has allowed for the implementation of prevention, early detection, and control measures, including:

    * Public awareness campaigns and on-site training in high-risk areas, with instructions for the public on reporting and managing suspected cases.
    * Installation of 62 GBG traps to capture flies and confirm the insect's natural presence in the environment.
    * Regulation of livestock movement from affected areas of the country to Coahuila, as well as their inspection and treatment.
    * Conducting sweeps to apply preventive treatments with doramectin to exposed animals in high-risk areas.
    * Installation of traps with attractant bait at livestock handling facilities to reduce fly population density in affected areas.

    Authorities also reiterated their commitment to addressing this new challenge for the state's livestock industry through ongoing coordination with ranchers, joining forces and working together to report any suspected cases, with the goal of protecting animal health and public health in the state.



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    /https://en.wikipedia.org/wiki/Casta%C3%B1os_Municipality
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    Coahuila detects first positive case of GBG

    29/04/26

    Saltillo, Coahuila de Zaragoza – SENASICA confirmed the first case of GBS in Coahuila, after a positive diagnosis was made in samples taken by the CPA from a female bovine approximately 3 years old on a property in the municipality of Castaños.

    Following this discovery, the Emergency Health Operations Center (COES) established in Coahuila, with participation from the Federal Government (SADER, SENASICA, and the CPA), and from the State Government (the Ministries of Rural Development, Health, and Environment), The Committee for the Promotion and Protection of Livestock in Coahuila and La Laguna, along with municipal authorities and the Regional Livestock Unions of Coahuila and La Laguna, reported that five operational teams from SENASICA (National Service for Agrifood Health, Safety and Quality), the CPA (Agricultural Production Commission), and the State Government, specializing in handling such cases, are currently on site. These teams will conduct a sweep of a 40-kilometer radius around the affected area, inspecting, treating wounds, bathing, and administering preventive doramectin treatment to animals found in the zone. In the coming days, 10 more teams will join these efforts, covering a total of eight municipalities in the state through critical sweeps and containment operations.

    Furthermore, all livestock movements originating from the areas surrounding the positive case in Castaños and Saltillo, due to the capture of fertile GBG flies in traps placed on the border with Zacatecas, must be preceded by preventive doramectin treatment of the animals.

    The request to the general public is reiterated to promptly report any suspected cases through the SDR, SENASICA, CPA and municipal authorities via the following numbers: Whatsapp 55 3996 4462 or telephone 800 751 2100.


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    • #77
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      Page 81/85
      • Epidemiological Week 16
      https://www.gob.mx/salud/documentos/...rmacion-417103​​

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      • #78
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        Page 81/85
        • Epidemiological Week 17
        https://www.gob.mx/salud/documentos/...rmacion-417103

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        Protect yourself from the Screwworm

        Proper care of any skin injury is one of the main protective measures.

        Ministry of Health | May 18, 2026
        https://www.gob.mx/salud

        The Ministry of Health is urging the public to stay informed and reinforce preventative measures against myiasis caused by the screwworm, a disease that can affect both animals and people. Although it has been primarily associated with cattle for years, it can also occur in dogs, cats, and humans, making prevention and early detection crucial.
        This disease is caused by the fly larva (Cochliomyia hominivorax), which has the ability to invade open wounds to feed on living tissue.

        Therefore, proper care of any skin injury is one of the main protective measures. Cuts, scrapes, or even bites should be washed immediately with soap and water, properly disinfected, and kept covered with sterile gauze or bandages until they heal, since flies specifically seek out these types of wounds to lay their eggs.

        Maintaining good personal hygiene is also key to reducing risks, especially in children, older adults, and those who have frequent contact with animals.

        In addition, it is recommended to use protective clothing, such as long sleeves and pants, when carrying out activities in the field or near animals, as well as the use of authorized repellents on skin and clothing to avoid the presence of flies.

        In the case of pets, prevention involves regular checks. Carefully observing areas such as the ears, paws, tail, muzzle, and fur allows for the early detection of any wounds, irritations, or skin lesions. If any are identified, it is important to clean them, keep them protected, and consult a licensed veterinarian immediately. It is also recommended to prevent the animal from licking or scratching the affected area, as this can worsen the injury.

        There are warning signs that must be addressed immediately:
        • Presence of maggots in wounds
        • Bad smell
        • Severe inflammation
        • Tissue damage
        • Pain, irritation, or injuries that do not heal
        If any of these signs appear, it is essential to seek medical or veterinary attention immediately.

        In case of suspected myiasis caused by the Cattle Screwworm, the public can contact the following numbers:
        • 800 751 2100
        • 079
        • (55) 5337-1845 (Epidemiological and Health Intelligence Unit, UIES)
        The Ministry of Health reiterates that prevention, timely care, and proper wound treatment are essential to protecting the health of people and companion animals. Daily monitoring and timely information are key tools for preventing complications and strengthening sanitary control in the country.

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        • #79
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          • #80
            Source: https://www.reuters.com/business/hea...da-2026-05-29/

            Flesh-eating screwworm found within 31 miles of US border, says USDA
            By Heather Schlitz
            May 29, 20267:09 PM EDTUpdated 20 hours ago​

            CHICAGO, May 29 (Reuters) - A devastating parasitic fly that eats warm-blooded animals alive and could cause millions of dollars in economic ​damage to the U.S. economy has been found in a young sheep ‌in Mexico within 31 miles (50 km) of the U.S. border, the U.S. Department of Agriculture reported on Friday.

            The detection heightens the risk for America's beef industry and cattle producers, who ​have feared for more than a year that the pest would cross ​into the U.S. and infect livestock after spreading northward in Mexico.​

            This ⁠latest detection of the fly, New World Screwworm, was in a six-month-old sheep ​in Mexico's Coahuila state, according to USDA data. It was the closest the ​parasite has come to the U.S. during the most recent outbreak, despite a sprawling effort by USDA and Mexico to contain the pest.

            Experts cautioned that if the fly enters the U.S., ​it could further spike record beef prices by keeping more calves out of ​the U.S. cattle supply. An outbreak in the U.S. could cause $1.8 billion in damage to ‌Texas' ⁠economy alone, according to a USDA estimate. Texas is the biggest U.S. cattle-producing state.​...

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            • #81
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              Page 86/91
              • Epidemiological Week 19
              https://www.gob.mx/salud/documentos/...rmacion-417103

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              • #82
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                • #83
                  New World screwworm threat continues as USDA, Texas tries to stop it

                  Mateo Rosiles
                  USA TODAY NETWORK
                  June 2, 2026, 4:55 p.m. ET​


                  A parasitic fly that was eradicated from the United States in the 1960s has been slowly creeping back after being detected within 25 miles of the Texas-Mexico border, marking its closest approach to American soil to date.

                  U.S. Department of Agriculture Sec. Brooke Rollins said on a media call on Tuesday, June 2, that her department is actively working to prevent the New World screwworm from entering the U.S., but if it does, it is ready to combat it.

                  more....https://www.usatoday.com/story/news/...e/90372704007/

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