Note: For the 2016-17 season, CDC recommends use of the flu shot (inactivated influenza vaccine or IIV) and the recombinant influenza vaccine (RIV). The nasal spray flu vaccine (live attenuated influenza vaccine or LAIV) should not be used during 2016-17. The 2016-17 influenza vaccination recommendations are now available.
Influenza activity is rising in the U.S. at this time. Outpatient visits for influenza-like-illness are above the national baseline. Activity is expected to increase further in the coming weeks.
CDC recommends a yearly flu vaccine for everyone 6 months and older. It is not too late to get vaccinated. Flu vaccination can reduce flu illnesses and prevent flu-related hospitalizations. More than 143 million doses of seasonal influenza vaccine have been distributed at this time.
CDC also recommends prompt treatment with influenza antiviral drugs for people who are very sick with flu or people who are at high risk of flu illness who get flu.
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There are many different influenza A viruses; some are found in humans and others in animals such as avian flu in birds and poultry.
U.S. H5 Viruses: Highly pathogenic avian influenza (HPAI) H5 infections have been reported in U.S. birds and poultry. No human infections with these viruses have been detected at this time, however similar viruses have infected people in other countries and caused serious illness and death in some cases.
CDC’s pandemic preparedness efforts include ongoing surveillance of human and animal influenza viruses, risk assessments of influenza viruses with pandemic potential, and the development and improvement of preparedness tools that can aid public health practitioners in the event of an influenza pandemic.
Bat influenza refers to influenza A viruses found in bats. Laboratory research at CDC suggests these viruses would need to undergo significant changes to become capable of infecting and spreading easily among humans. Little yellow shouldered bats are not native to the continental United States, but are common in Central and South America.
Influenza A viruses are found in humans and many different animals, including ducks, chickens, pigs, whales, horses and seals. Additional information on 2009 H1N1 influenza, Flu.gov, and Nonpharmaceutical Interventions (NPIs).
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The latest report on CDC's international flu activities highlights the progress that has been made over the past two fiscal years in establishing, expanding and maintaining influenza surveillance and laboratory capacity in more than 50 countries around the world where CDC has provided support.
- Situation Update: Summary of Weekly FluView Report Friday, January 13, 2017
- FluView - Weekly Influenza Surveillance Report Friday, January 13, 2017
- 2016-2017 Influenza Antiviral Recommendations Wednesday, January 11, 2017
- CDC Expert Commentary: 2016-2017 Influenza Antiviral Recommendations Wednesday, January 11, 2017
- CDC Expert Commentary on Medscape: 2016-2017 Influenza Antiviral Recommendations Wednesday, January 11, 2017
- Page last reviewed: January 13, 2017
- Page last updated: January 13, 2017
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- Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD)
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