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Influenza vaccines, colloquially known as flu shots, are vaccines that protect against infection by influenza viruses. New versions of the vaccines are developed twice a year, as the influenza virus rapidly changes. While their effectiveness varies from year to year, most provide modest to high protection against influenza. Vaccination against influenza began in the 1930s, with large-scale ...
Mar 22, 2024 · For people younger than 65 years, CDC does not preferentially recommend any licensed, age-appropriate influenza (flu) vaccine over another. Options for this age group include inactivated influenza vaccine [IIV], recombinant influenza vaccine [RIV], or live attenuated influenza vaccine (LAIV), with no preference for any flu vaccine over another.
WHO fact sheet on influenza: includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, WHO response.
Everyone 6 months and older in the United States, with rare exception, should get an influenza (flu) vaccine every season. CDC’s Advisory Committee on Immunization Practices has made this “universal” recommendation since the 2010-2011 influenza season.
Mar 14, 2024 · Influenza (flu) vaccines cause antibodies to develop in the body about two weeks after vaccination. These antibodies provide protection against infection with the flu viruses that are used to make vaccine.
Because flu viruses change so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly changing flu viruses.
Vaccination is the most effective way to prevent infection and severe outcomes caused by influenza viruses. Development and production of influenza vaccines, planning for their supplies and use as well as provision of other respective health care resources are essential components of a comprehensive seasonal and pandemic influenza response.
Commonly known as the flu. It is caused by influenza virus (A ,B and C). Strains of influenza virus that cause the flu may differ from year to year. The common contagious diseases in humans and responsible for outbreaks that occur yearly.
Fact: The injected flu vaccine contains an inactivated virus that cannot give you influenza. If you feel achy or slightly feverish, it is a normal reaction of the immune system to the vaccine, and generally lasts only a day or two.
Jul 9, 2024 · While flu vaccine effectiveness varies year-to-year, research shows that flu vaccines are typically between 40% and 60% effective during years when the most prevalent flu strains match the strains in the vaccine. This means the vaccine reduces your risk of catching the flu by 40% to 60%. The vaccine ...
