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  1. This vaccine is made with an adjuvant (an ingredient that helps create a stronger immune response). An egg-based live attenuated influenza nasal spray vaccine (FluMist Quadrivalent) made with attenuated (weakened) live influenza viruses, which is approved for use in people 2 years through 49 years. This vaccine is not recommended for use in ...

    • Flu

      Influenza (flu) is a contagious respiratory illness caused...

  2. Aug 3, 2020 · Even so, it is estimated that the 2017–2018 influenza vaccine prevented 7.1 million influenza virus illnesses, 109,000 hospitalizations, and 8000 deaths . Thus, even when not optimally matched with the circulating strains, the influenza vaccine is effective in substantially lowering the burden caused by yearly influenza virus epidemics.

    • Christopher E Lopez, Kevin L Legge
    • 2020
  3. As examples, the recombinant influenza vaccine is approved for people aged 18 years and older, and the adjuvanted and high-dose inactivated vaccines are approved for people aged 65 years and older. Flu shots are recommended for pregnant people and people with certain chronic health conditions. Most people with an egg allergy can get a flu shot.

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  4. Jan 10, 2024 · This year's seasonal flu vaccines each provide protection against the four influenza viruses expected to be the most common during this flu season. This year, the vaccine will be available as an injection and as a nasal spray. There also will be high-dose flu vaccines offered for adults age 65 and older. The nasal spray is approved for people ...

  5. Oct 3, 2023 · Overview. Seasonal influenza (the flu) is an acute respiratory infection caused by influenza viruses. It is common in all parts of the world. Most people recover without treatment. Influenza spreads easily between people when they cough or sneeze. Vaccination is the best way to prevent the disease. Symptoms of influenza include acute onset of ...

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