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Louisiana - Human H5N1 cases 2024

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  • Louisiana - Human H5N1 cases 2024

    hat tip @greg_folkers




    LDH detects first presumptive positive human H5N1 case in Louisiana

    Current general public health risk for the highly infectious avian influenza is low


    December 13, 2024

    The Louisiana Department of Health (LDH) has detected the first presumptive positive human case of highly pathogenic avian influenza (HPAI), or H5N1, in Louisiana. The individual is a resident of southwestern Louisiana and is currently hospitalized.

    LDH's Office of Public Health is coordinating with the Centers for Disease Control and Prevention (CDC) on the epidemiologic investigation. The investigation identified that the individual had exposure to sick and dead birds that are suspected to have been infected with H5N1.

    H5N1 is a type of influenza virus that causes highly infectious and severe respiratory disease in birds. In the United States, outbreaks of the currently circulating H5N1 avian influenza viruses in wild birds and poultry have been ongoing since 2022. As of December 13, 2024, 60 confirmed human cases of H5N1 have been reported across the U.S., with the majority linked to exposure to infected poultry or dairy cows. There has been no human-to-human virus transmission in the U.S. to date.

    While the current public health risk for the general public is low, people who work with birds, poultry or cows, or have recreational exposure to them, are at higher risk.

    The best way to protect yourself and your family from H5N1 is to avoid sources of exposure. That means avoiding direct contact with wild birds and other animals infected with or suspected to be infected with bird flu viruses.

    Protecting yourself and others from H5N1 infection
    • Do not touch sick or dead animals or their droppings and do not bring sick wild animals into your home.
    • Keep your pets away from sick or dead animals and their feces.
    • Do not eat uncooked or undercooked food. Cook poultry, eggs and other animal products to the proper temperature and prevent cross-contamination between raw and cooked food.
    • Avoid uncooked food products such as unpasteurized raw milk or cheeses from animals that have a suspected or confirmed infection.
    • If you work on poultry or dairy farms, talk to your provider about getting your seasonal flu vaccination. It will not prevent infection with avian influenza viruses, but it can reduce the risk of coinfection with avian and flu viruses.
    • Report dead or sick birds or animals to the USDA toll-free at 1-866-536-7593 or the Louisiana Department of Agriculture and Forestry Diagnostic Lab at 318-927-3441.

    If a commercial poultry flock is affected, immediately quarantine the premises and bird(s) and limit exposure to birds until regulatory officials can respond or direct the veterinarian regarding an appropriate course of action.

    If you have been exposed to sick or dead birds or other animals or work on a farm where avian influenza has been detected, watch for respiratory symptoms or conjunctivitis. If you get symptoms within 10 days after exposure to sick or dead animals, tell your healthcare provider that you have been in contact with sick animals and are concerned about avian influenza. This will help them give you appropriate advice on testing and treatment. Stay home and away from others while you have symptoms.


    The Louisiana Department of Health protects and promotes health and ensures access to medical, preventive and rehabilitative services for all citizens of the State of Louisiana.


  • #2
    CDC Confirms First Severe Case of H5N1 Bird Flu in the United States

    Statement



    For immediate release: December 18, 2024
    CDC Media Relations
    (404) 639-3286

    December 18, 2024-- A patient has been hospitalized with a severe case of avian influenza A(H5N1) virus ("H5N1 bird flu") infection in Louisiana. This marks the first instance of severe illness linked to the virus in the United States. The case was confirmed by the Centers for Disease Control and Prevention (CDC) on Friday, December 13. Since April 2024, there have been a total of 61 reported human cases of H5 bird flu reported in the United States.

    Partial viral genome data of the H5N1 avian influenza virus that infected the patient in Louisiana indicates that the virus belongs to the D1.1 genotype related to other D1.1 viruses recently detected in wild birds and poultry in the United States and in recent human cases in British Columbia, Canada, and Washington state. This H5N1 bird flu genotype is different than the B3.13 genotype detected in dairy cows, sporadic human cases in multiple states, and some poultry outbreaks in the United States. Additional genomic sequencing and efforts to isolate virus from clinical specimens from the patient in Louisiana are underway at CDC.

    While an investigation into the source of the infection in Louisiana is ongoing, it has been determined that the patient had exposure to sick and dead birds in backyard flocks. This is the first case of H5N1 bird flu in the U.S. that has been linked to exposure to a backyard flock. A sporadic case of severe H5N1 bird flu illness in a person is not unexpected; avian influenza A(H5N1) virus infection has previously been associated with severe human illness in other countries during 2024 and prior years, including illness resulting in death. No person-to-person spread of H5 bird flu has been detected. This case does not change CDC's overall assessment of the immediate risk to the public's health from H5N1 bird flu, which remains low.

    This case underscores that, in addition to affected commercial poultry and dairy operations, wild birds and backyard flocks also can be a source of exposure. People with work or recreational exposures to infected animals are at higher risk of infection and should follow CDC's recommended precautions when around animals that are infected or potentially infected with H5N1 avian influenza virus. This means that backyard flock owners, hunters and other bird enthusiasts should also take precautions.

    The best way to prevent H5 bird flu is to avoid exposure whenever possible. Infected birds shed avian influenza A viruses in their saliva, mucous, and feces. Other infected animals may shed avian influenza A viruses in respiratory secretions and other bodily fluids (e.g., in unpasteurized cow milk or 'raw milk').
    • As a general precaution, whenever possible, people should avoid contact with sick or dead animals, in particular wild birds, and poultry.
    • For individuals with direct/close contact with wild birds or sick or dead poultry or other animals, wear recommended personal protective equipment (PPE). Wild birds can be infected with avian influenza A viruses even if they don't look sick.
    • Do not touch surfaces or materials (e.g., animal litter or bedding material) contaminated with saliva, mucous, or animal feces from wild or domestic birds or other animals with confirmed or suspected avian influenza A virus infection.

    For more information on H5 bird flu in the U.S. and CDC's response, including regularly updated case counts, visit the H5 Bird Flu: Current Situation page.

    December 18, 2024-- A patient has been hospitalized with a severe case of avian influenza A(H5N1)

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    • #3
      Media
      [bolding is mine]

      Health officials say Lake Charles patient is first 'severe' bird flu case in US
      Dec 18, 2024 Updated 9 hrs ago​

      LAKE CHARLES, La. (NEWS 15/AP) — A person in Louisiana has the first severe illness caused by bird flu in the U.S., health officials said Wednesday.

      The patient had been in contact with sick and dead birds in backyard flocks, the Centers for Disease Control and Prevention said. Agency officials didn't immediately detail the person's symptoms.

      Medical sources told News 15 that the patient is over age 65 and hospitalized in critical condition in the Lake Charles area.

      ...https://www.kadn.com/news/health/hea...3acfec8fc.html

      Comment


      • #4
        Bird flu: Louisiana patient is first severe case and California declares emergency

        By MIKE STOBBE and JONEL ALECCIA
        Updated 4:26 PM CST, December 18, 2024
        ...
        A person in Louisiana is hospitalized in critical condition with severe respiratory symptoms caused by a bird flu infection, state health officials said. The person, who is over 65 and has underlying medical problems, had been in contact with sick and dead birds in a backyard flock.
        ...
        The Louisiana illness comes weeks after Canadian officials reported that a teen in British Columbia was hospitalized with a severe case of bird flu. In both instances, the illnesses were caused by a strain of the virus found in wild birds, not in cattle, officials said.

        On a call with reporters, CDC officials did not answer a question about whether the new U.S. case and the Canada case had any similarities or differences.
        ...
        Flu experts said the trajectory of the virus in people remains unclear, but they urged people who have contact with sick or dead birds to take precautions, including wearing respiratory and eye protection and gloves when handling poultry.
        ...
        https://apnews.com/article/bird-flu-severe-louisiana-2b4a5f55a05cf8be9b169c15e8b9582d​

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