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              Avian Influenza (Bird Flu)
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            Current Situation About Signs and Symptoms Causes and Spread Risk Factors Prevention Treatment Backyard Flock Owners: Protect Yourself from Bird Flu View All
            Current Situation Monitoring Current Situation About Signs and Symptoms Bird Flu in Animals and People Prevention Backyard Flock Owners: Protect Yourself from Bird Flu Avian Influenza Social Media Toolkit View All
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                    * Current Situation
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                    * Case Definitions for Investigations of Human Infection with Avian Influenza A Viruses in the United States
                    * Clinical Overview
                    * Interim Guidance on the Use of Antiviral Medications for Treatment of Human Infections with Novel Influenza A Viruses Associated with Severe Human Disease
                    * Interim Guidance on Influenza Antiviral Chemoprophylaxis of Persons Exposed to Birds with Avian Influenza A Viruses Associated with Severe Human Disease or with the Potential to Cause Severe Human Disease
                    * Infection Control Guidance
                    * Considerations for Veterinarians: Evaluating and Handling of Cats Potentially Exposed to Highly Pathogenic Avian Influenza A(H5N1) Virus in Cats
                    * Conversation Tips: Unpasteurized (Raw Milk)
                    * Emergency Use Instructions (EUI) for Oseltamivir
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                Public Health
                    * H5N1 Bird Flu: Current Situation Summary
                    * Public Health Strategies for Bird Flu
                    * Interim Guidance on Specimen Collection and Testing for Patients with Suspected Infection with Novel Influenza A Viruses Associated with Severe Disease or with the Potential to Cause Severe Disease in Humans
                    * Interim Guidance for Follow-up of Close Contacts of Persons Infected with Novel Influenza A Viruses and Use of Antiviral Medications for Chemoprophylaxis
                    * H5N1 Technical Report
                    * Report: Highly Pathogenic Avian Influenza
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                    * Seasonal Flu
                    * Swine Flu
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          View All Bird Flu
      Current Situation Monitoring Current Situation About Signs and Symptoms Bird Flu in Animals and People Prevention Backyard Flock Owners: Protect Yourself from Bird Flu Avian Influenza Social Media Toolkit View All
      Current Situation About Signs and Symptoms Causes and Spread Risk Factors Prevention Treatment Backyard Flock Owners: Protect Yourself from Bird Flu View All
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  Bird Flu
                        Current Situation
                        H5 bird flu is causing outbreaks in wild birds and poultry, other animals and sporadic human cases.
                      Nov. 4, 2024
                      May 2, 2025
                        Current H5N1 Bird Flu Situation in Dairy Cows
 
                        Signs and Symptoms
                        Learn about signs and symptoms of bird flu in people
                      Dec. 20, 2024
                        Bird Flu in Humans
                        Infections with highly pathogenic avian influenza A(H5N1) viruses in mammals have been reported.
                        Bird Flu in Dairy Cows
                        A multi-state outbreak of HPAI A(H5N1) bird flu in dairy cows was first reported on March 25, 2024.
                      Nov. 4, 2024
                        Detections in Wild Birds
                        Current US Bird Flu Situation in Humans
                        Infections with highly pathogenic avian influenza A(H5N1) viruses in mammals have been reported.
                        Bird Flu Detections in US Wild Birds
                        January 14, 2024, USDA APHIS reported the first H5N1 detection in wild birds in the US since 2016.
                        Bird Flu Detections in US Poultry
                        Detections in Poultry
                        In February 2022, USDA’s APHIS announced an HPAI A(H5N1) virus outbreak in commercial poultry.
        Featured
                    Monitoring Current Situation
                    Surveillance and Monitoring Data
                    CDC surveillance shows no indicators of unusual flu activity in people, including H5N1 bird flu.
                  Nov. 1, 2024
                  May 1, 2025
                    Highly Pathogenic Avian Influenza A(H5N1) Virus in Animals: Interim Recommendations for Prevention, Monitoring, and Public Health Investigations
                    This page outlines CDC’s recommendations for preventing exposure to avian influenza viruses.
                  June 20, 2024
                  Dec. 26, 2024
                    Avian Influenza (Bird Flu) Resources
                    A collection of materials and tools to help educate and inform the public about bird flu
                  Nov. 4, 2024
                  Dec. 5, 2024
          News
            RestoredCDC is an archival snapshot; therefore, news items and outbreak information are not current.
                                Results of Influenza Risk Assessment Tool
 
                              The IRAT assesses potential pandemic risk of flu viruses not currently circulating in people. May 2, 2025
                                Genetic Sequences of Highly Pathogenic Avian Influenza A(H5N1) Viruses Identified in a Person in Louisiana
                                CDC A(H5N1) Bird Flu Response Update March 19, 2025
                              CDC has sequenced the influenza viruses in specimens collected from the patient in Louisiana who was Dec 26, 2024
                              CDC provides updates on recent lab findings. Mar 19, 2025
                                Highly Pathogenic Avian Influenza A(H5N1) Virus: Interim Recommendations for Prevention, Monitoring, and Public Health Investigations
                                Risk to People in the United States from Highly Pathogenic Avian Influenza A(H5N1) Viruses
                              This page outlines CDC’s recommendations for preventing exposure to avian influenza viruses. Dec 26, 2024
                              Risk to People in the United States from Highly Pathogenic Avian Influenza A(H5N1) Viruses Feb 28, 2025
                                CDC Confirms First Severe Case of H5N1 Bird Flu in the United States
                                  Geographic Location: United States
                              December 18, 2024-- A patient has been hospitalized with a severe case of avian influenza A(H5N1) Dec 18, 2024
                                CDC A(H5N1) Bird Flu Response Update February 26, 2025
                                Technical Update: Summary Analysis of the Genetic Sequence of a Highly Pathogenic Avian Influenza A(H5N1) Virus Identified in a Child in California
                              CDC provides an update on recent developments in the multistate outbreak of avian influenza A(H5N1) Feb 26, 2025
                              CDC provides an update on genetic sequencing of the first pediatric case of avian influenza A(H5N1) virus, or "H5N1 bird flu," in the United States. Dec 10, 2024
                                  Geographic Location: Nevada , Ohio , Wyoming
                                CDC confirms H5N1 Bird Flu Infection in a Child in California
                                CDC Activities and Accomplishments to Date in 2024—2025 H5 Bird Flu Response
                              The Centers for Disease Control and Prevention (CDC) has confirmed a human infection with avian influenza A(H5N1) (H5N1 bird flu) in a child in California. Nov 22, 2024
                              The current outbreak began in late March 2024 with the detection of H5N1 bird flu in dairy cows. Jan 17, 2025
                                  Geographic Location: United States
                                H5 Bird Flu Response: Focus Areas for Ongoing Public Health Risk Assessment
                              CDC continues to assess that the current H5N1 bird flu risk to the general public remains low. Jan 15, 2025
                                  Geographic Location: United States
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    Bird Flu
    Avian influenza or bird flu refers to the disease caused by infection with avian (bird) influenza (flu) Type A viruses.
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          * Bird Flu in Animals and People
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          * Treatment
          * Backyard Flock Owners: Protect Yourself from Bird Flu
          * Avian Influenza Social Media Toolkit
          * View all
          Health Care Providers
            * Case Definitions for Investigations of Human Infection with Avian Influenza A Viruses in the United States
            * Clinical Overview
            * Interim Guidance on the Use of Antiviral Medications for Treatment of Human Infections with Novel Influenza A Viruses Associated with Severe Human Disease
            * View All
          Public Health
            * H5N1 Bird Flu: Current Situation Summary
            * Public Health Strategies for Bird Flu
            * Interim Guidance on Specimen Collection and Testing for Patients with Suspected Infection with Novel Influenza A Viruses Associated with Severe Disease or with the Potential to Cause Severe Disease in Humans
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