Seasonal Flu

New postings to the CDC flu site

CDC A(H5N1) Bird Flu Response Update September 27, 2024 September 27, 2024
In this week's update, CDC shares an update on the investigation in Missouri; information about updated guidance on the use of personal protective equipment for people working with or exposed to infected animals; and information about a new standardized protocol for subtyping of wastewater samples that test positive for influenza A.
FDA Approves Nasal Spray Influenza Vaccine for Self- or Caregiver-Administration September 24, 2024
Today, the U.S. Food and Drug Administration approved FluMist for self- or caregiver-administration.
CDC A(H5N1) Bird Flu Response Update September 20, 2024 September 20, 2024
In this week's update, CDC shares information on a new MMWR report summarizing data from the first 9 weeks of monitoring influenza A viruses, including avian influenza A(H5), in wastewater across the United States; an update on an H5 serosurvey of bovine practitioners; an update on the investigation in Missouri; and an update on the […]
CDC A(H5N1) Bird Flu Response Update September 13, 2024 September 13, 2024
CDC provides an update on its response activities related to the multistate outbreak of avian influenza A(H5N1) virus, or "H5N1 bird flu," in dairy cows and other animals in the United States.
CDC Confirms Human H5 Bird Flu Case in Missouri September 6, 2024
CDC has confirmed a human case of avian influenza A(H5) ("H5 bird flu") reported by the state of Missouri.
CDC Study Shows Early Flu Antiviral Treatment Decreases Risk of Death August 30, 2024
A new CDC study suggests that starting antiviral treatment early reduces the risk of death in adults hospitalized with flu.
Southern Hemisphere Flu Season Could Provide Clues on Upcoming US Flu Season August 26, 2024
As the 2024 Southern Hemisphere flu season draws to a close, data reveal that the 2024 flu season was similar to previous flu seasons in the Southern Hemisphere, underscoring that seasonal flu continues to have a significant public health impact in terms of illnesses, hospitalizations, and deaths globally.
Southern Hemisphere Flu Season Could Provide Clues on Upcoming US Flu Season August 26, 2024
As the 2024 Southern Hemisphere flu season draws to a close, data reveal that the 2024 flu season was similar to previous flu seasons in the Southern Hemisphere, underscoring that seasonal flu continues to have a significant public health impact in terms of illnesses, hospitalizations, and deaths globally.
CDC A(H5N1) Bird Flu Response Update August 16, 2024 August 16, 2024
In this week's update, CDC shares information about ongoing serology studies in Colorado and Michigan, genetic characterization of viruses from recent human cases in Colorado poultry workers, and how CDC's National Syndromic Surveillance Program is supporting this response.
How CDC Uses Emergency Department Data to Watch for Unusual Patterns of Flu Amid Concerns Over H5N1 Bird Flu August 15, 2024
CDC's National Syndromic Surveillance Program (NSSP) captures electronic health record data reported automatically from more than 6,500 U.S. healthcare facilities, representing nearly 80% of emergency departments (ED) in all 50 states, the District of Columbia, and Guam.
CDC A(H5N1) Bird Flu Response Update August 9, 2024 August 9, 2024
In this week's update, CDC shares information about a new report summarizing the results of an Influenza Risk Assessment Tool (IRAT) of an avian influenza A(H5N1) virus from a human case in Texas. This update also provides key findings from a new CDC laboratory study of the effects of the avian influenza A(H5N1) virus from […]
CDC A(H5N1) Bird Flu Response Update August 2, 2024 August 2, 2024
In this week's update, CDC shares information about two new investments the agency announced this week to protect and improve farmworker health. This update also provides a summary of new genetic sequencing data from the viruses that caused three human cases in Colorado poultry workers that were confirmed on July 25, 2024. Also included is […]
CDC A(H5N1) Bird Flu Response Update July 26, 2024 July 26, 2024
In this week's Spotlight, we confirm three additional cases of H5 bird flu in poultry farm workers at a second poultry farm in Colorado, for a total of 13 human cases since April 2024. All three people were working to depopulate infected poultry as part of a culling at a commercial egg layer operation that […]
CDC A(H5N1) Bird Flu Response Update, July 19, 2024 July 19, 2024
In this week's Spotlight, we include the key findings from the recent Michigan-led study that tested the blood of farmworkers from two dairy farms that experienced an outbreak of highly pathogenic avian influenza A(H5N1) virus among cattle.
CDC Confirms Human Cases of H5 Bird Flu Among Colorado Poultry Workers July 14, 2024
Four human cases of highly pathogenic avian influenza (HPAI) A(H5) ("H5 bird flu") virus infection in the state of Colorado have been confirmed by the Centers for Disease Control and Prevention (CDC). This includes all three presumptive-positive cases reported by that state on Friday, July 12 and a fourth specimen that was later found to […]
Colorado Reports Three Presumptive Positive H5 Cases in Poultry Workers July 12, 2024
The state of Colorado has announced that three people have tested presumptive positive for highly pathogenic avian influenza (HPAI) A(H5) ("H5 bird flu") virus infection.
CDC Issues Updated Guidance to Help Prevent Spread of Flu at Agricultural Fairs July 11, 2024
CDC has issued updated guidance to help prevent the spread of flu between animals and between animals and people at fairs.
CDC Reports Fourth Human Case of H5 Bird Flu Tied to Dairy Cow Outbreak July 3, 2024
A human case of highly pathogenic avian influenza (HPAI) A(H5) ("H5 bird flu") virus infection in the United States has been identified in the state of Colorado.
CDC Recommends Updated 2024-2025 COVID-19 and Flu Vaccines for Fall/Winter Virus Season June 28, 2024
Today, CDC recommended the updated 2024-2025 COVID-19 vaccines and the updated 2024-2025 flu vaccines to protect against severe COVID-19 and flu this fall and winter.
CDC Confirms Second Human H5 Bird Flu Case in Michigan; Third Case Tied to Dairy Outbreak May 30, 2024
A second human case of highly pathogenic avian influenza (HPAI) A(H5) virus infection has been identified in the state of Michigan.