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2.1: Influenza

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    There are 30,000-50,000 deaths annually in the US from influenza and greater than 200,000 associated hospitalizations. Barriers to Adult Vaccinations, a study that surveyed approximately 2000 consumers, found that 43% cited concern about side effects as their reason for avoiding vaccination. An additional 18% reported they feared they may get the disease.4 As primary care providers we must provide our patients with basic vaccine education to combat vaccine myths.

    What to know in clinic:

    EVERYONE over 6 months should get the flu shot EVERY year  


    There are various trade names and manufacturers but just know the broad categories 

    Inactivated influenza vaccines (IIV): 

    • 6 months to age 65 get Trivalent (IIV) or Quadrivalent (IIV4)
    • No current data on which to recommend

    High dose IIV:

    • Age 65+ population

    Egg free options:  

    • cc-IIV is a cell culture vaccine approved in 2013
    • RIV is a recombinant HA vaccine approved in 2013

    Live-attenuated influenza vaccine (LAIV):

    • Nasal formulation (Quadrivalent)
    • Healthy people 2-49 years
    • NOT for immunocompromised adults, pregnant women, anyone 
    • receiving antiviral medications within 48 hours
    • If health care persons receive LAIV they should avoid caring for 
    • severely immunosuppressed patients for 7 days follow vaccination


    Adverse Reactions: Fever, tiredness, muscle aches, headaches, arm soreness

    Precautions: History of GBS within 6 weeks of influenza vaccination, adults with egg allergy may receive RIV or cc-IIV, adults with “hives only” egg allergy may receive IIV

    2.1: Influenza is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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