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Wyoming: Avian Flu in Humans 2025

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  • Wyoming: Avian Flu in Humans 2025

    Wyoming’s First Human Bird Flu Case Confirmed


    February 14, 2025
    Wyoming’s first case of H5N1 avian influenza in a human has been confirmed in a Platte County older adult, according to the Wyoming Department of Health (WDH). The woman represents the third confirmed hospitalization related to H5N1 in the United States.

    “While this is a significant development as bird flu activity is monitored in Wyoming and across the country, it is not something we believe requires a high level of concern among most Wyoming residents,” said Dr. Alexia Harrist, state health officer and state epidemiologist with the Wyoming Department of Health

    Harrist said the woman is hospitalized in another state, has health conditions that can make people more vulnerable to illness, and was likely exposed to the virus through direct contact with an infected poultry flock at her home. H5N1 has been known to be infecting wild birds in Wyoming for some time now with the currently circulating virus spreading nationally since 2022. Infections among poultry and dairy cattle have also occurred previously in Wyoming.

    “Experts continue to track the spread of H5N1 through wild birds, poultry and dairy cattle across the country. A small number of people have also been infected. Most of those confirmed cases involved on-the-job close contact with poultry or cattle and mild symptoms,” Harrist said. “Unfortunately, this patient’s experience has been much more serious.”

    “We want to remind people there has been no documented human-to-human virus transmission of this virus in the United States so far,” Harrist said. “Our staff has followed up with other people who had contact with the flock and the patient, and will continue working with state and national experts to monitor the situation carefully for Wyoming.”

    Harrist noted the current public health risk is low, but there are some common-sense steps people may consider to help protect themselves and their families:
    • Do not eat uncooked or undercooked food; cook poultry, eggs and other animal products to the proper temperature and avoid cross-contamination between raw and cooked food.
    • Avoid direct contact with wild birds.
    • Avoid contact with wild or domestic birds that appear ill or have died. If symptoms are observed in birds, immediately contact a veterinarian, or report sick domestic birds to the Wyoming Livestock Board at 307-777-8270. If contact with the sick or dead birds is necessary, use of personal protection clothing and items is strongly recommended.
    • Avoid unprotected direct physical contact or close exposure with cattle and materials potentially infected or confirmed to be infected with bird flu.
    • Do not eat or drink raw milk or products made with raw milk.

    Sick or dead wild birds may be reported to the Wyoming Game and Fish Department (WGFD) by calling 307-745-5865, reporting online at https://survey123.arcgis.com/share/7...3f7eb37d06315a or contacting the nearest WGFD regional office.

    The test result was confirmed this afternoon by a Centers for Disease Control and Prevention (CDC) laboratory.

    More information about bird flu is available from the CDC at https://www.cdc.gov/bird-flu/index.html. More specific recommendations for people who have poultry are available from CDC at https://www.cdc.gov/bird-flu/groups/index.html.


    Wyoming’s first case of H5N1 avian influenza in a human has been confirmed in a Platte County older adult, according to the Wyoming Department of Health (WDH). The woman represents the third confirmed hospitalization related to H5N1 in the United States. “While this is a significant development as bird flu activity is monitored in Wyoming […]

    Last edited by sharon sanders; February 14, 2025, 07:38 PM. Reason: added rest of statement

  • #2
    please see: https://flutrackers.com/forum/forum/...40#post1007740 h/t pathfinder

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    • #3
      h/t@Alexander_Tin

      February 14, 2025

      Wyoming's health department on avian influenza hospitalization
      • Source: email
      • Attribution: Wyoming Department of Health spokesperson Kim Deti
      • Date: received February 14, 2025
      The patient is hospitalized in Colorado. We do not yet know the strain. She had flu-like symptoms.



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      • #4

        Alexander Tin
        @Alexander_Tin
        ·
        23m




        Some more details on that Wyoming H5N1 bird flu hospitalization reported today:
        - hospitalized in neighboring Colorado
        - she had flu-like symptoms
        - strain in human unknown... ...but flock in county had B3.13

        https://tinalexander.github.io/notes/2025/02#wyomings-health-department-on-avian-influenza-hospitalization

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        • #5
          Alexander Tin
          @Alexander_Tin

          More details on the Wyoming H5N1 bird flu case:
          February 15, 2024

          1) What is the condition (e.g. recovering, good, critical, etc.) of the patient?

          2) Around how long has she been hospitalized?

          3) Around how long has it been since she was initially exposed to sick birds?



          We don’t typically provide information on patient condition due to privacy concerns and decline to do so.

          The patient was hospitalized within the last two weeks. Exposure to the sick poultry preceded her hospitalization by just a couple of days.

          Notes gathered by Alexander Tin while reporting for CBS News about federal public health agencies.

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          • #6
            Alexander Tin's notes
            February 25, 2025

            Wyoming health department on H5 case hospitalization
            • Source: email
            • Attribution: Wyoming Department of Health spokesperson Kim Deti
            • Date: received February 25, 2025
            Just wanted to check in again to see if the H5 case was still hospitalized in Colorado? Also, has the strain been identified yet?

            She has been discharged from the hospital. The genotype was D1.1, which was the same as the poultry at her home.

            Wyoming state veterinarian on Platte County bird flu
            • Source: email
            • Attribution: Wyoming State Veterinarian Hallie Hasel
            • Date: received February 25, 2025
            Just wanted to follow up to see if Platte County’s genotype has been identified yet?

            Yes, the flock was confirmed as D1.1


            Notes gathered by Alexander Tin while reporting for CBS News about federal public health agencies.

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            • #7
              CDC A(H5N1) Bird Flu Response Update February 26, 2025

              ...
              Epidemiology Updates


              As of February 24, CDC has confirmed three human cases of H5 bird flu in people who became ill in 2025: a dairy worker with exposure to infected dairy cows (Nevada), a poultry worker with exposure to infected commercial poultry (Ohio), and the owner of an infected backyard poultry flock (Wyoming). These are all considered higher-risk exposures. While the dairy worker was not hospitalized, both people with poultry exposures experienced severe illness and were hospitalized. Both hospitalized cases were confirmed positive from lower respiratory specimens, including a bronchoalveolar lavage and sputum. To date, there has been no evidence of onward spread from any of these people to anyone else.​
              ​...
              The backyard flock owner in Wyoming had respiratory symptoms and is reported to have underlying health conditions that can make people more vulnerable to severe influenza illness. This person has been discharged from the hospital and is recovering. This person had direct contact with poultry infected with avian influenza A(H5) virus that died on their property. Initial upper respiratory specimens were negative for influenza viruses; a lower respiratory specimen collected several days later in the hospital was positive for avian influenza A(H5N1) virus.

              ...

              Laboratory Updates



              CDC has successfully sequenced the viruses from the Nevada and Wyoming cases. Genetic data have been posted in GISAID (Wyoming: EPI_ISL_19749443, Nevada: EPI_ISL_19726293) and GenBank. Sequencing data are not yet available for the Ohio case.
              ​...
              CDC's analysis of the genetic sequence of the virus from the patient in Wyoming identified an avian influenza A(H5N1) virus from clade 2.3.4.4.b (genotype D1.1). The virus had a genetic mutation in its PB2 protein that has previously been associated with more efficient virus replication in people and other mammals (i.e., change of PB2 E627K). This change was previously identified in a human case in Texas during 2024. No other changes associated with mammalian adaption were identified in the sequence data. CDC also did not identify any changes in the sequence data that might impact effectiveness of influenza antiviral medications or existing H5 candidate vaccine viruses. Virus was isolated from the case and will undergo further testing and analysis.​
              ...

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