Flu Information

What's New with the Flu

Although the symptoms of Influenza (flu) have not changed significantly over the years, treatment options and recommended vaccinations for 2022 - 2023 have changed.  

Flu Vaccinations:

This year, all flu vaccines are quadrivalent; meaning they cover four flu strains (two flu A and two flu B).


The Centers for Disease Control and Prevention (CDC) recommends the following vaccination schedule.  

For Those Under 65 Years of Age:

The standard flu vaccine should be received when approaching flu season. In Michigan, an ideal time to get vaccinated is generally September to November. However, you can benefit from receiving the flu vaccine any time, even during peak flu season which runs from approximately December through April.

Those 65 and Older:

There are three different CDC preferred flu vaccines for those 65 and older; two higher dose flu vaccines and one adjuvanted flu vaccine.

  • The higher dose flu vaccine is abbreviated as HD.
    • Advertised under the name Fluzone and available to those 65 and older. 
    • This vaccine is four times stronger than a regular flu vaccine.
  • The recombinant flu vaccine is abbreviated as RIV and does not use the flu virus or chicken eggs in the manufacturing process.
    • Advertised under the name Flublok and available to those 18 and older.
    • This vaccine is three times stronger than a regular flu vaccine.
  • The adjuvanted inactive flu vaccine is abbreviated as aIIV.
    • Advertised under the name Fluad and available to those 65 and older. 
    • This vaccine is the same strength as a regular dose of flu vaccine but has an added adjuvant to boost the response.

The standard flu vaccine still provides protection and benefit to all individuals, including those 65 and older, and can be found at most pharmacy or medical facility locations.

Flu FAQs

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    How long after vaccination will I be protected from the flu?

    It takes around two weeks to build up immunity from your vaccine.


    I am allergic to eggs, is there a flu vaccine that I could receive?

    Talk with your medical care provider to determine the best vaccine for you to receive, whether you should receive the vaccine under supervision of medical assistance as opposed to pharmacy location, and based upon your past allergic reactions.

    • One option to review with your medical care provider is a cell-based, egg-free vaccine advertised under the name Flucelvax.

    What symptoms should I look out for?

    Whether you experience a mild, moderate, or severe case of flu, most people report having at least some, if not all of the following symptoms, and often the symptoms develop quickly:

    • Fever or chills
    • Cough
    • Sore throat
    • Runny or stuffy nose
    • Muscle or body aches
    • Headache
    • Fatigue

    If I have the flu, how do I report the information to the University?

    Flu is an infectious illness and can be passed to others. Students and employees should complete the Medical/COVID-19 Referral Reporting Form if they have been diagnosed with a case of flu.


    How do I know if it is the flu or COVID-19?

    With symptoms being very similar, the only way to determine the difference between flu and COVID-19 is to test. Get in to an Urgent Care right away. Seeking medical assistance at an Urgent Care or same-day clinic will allow for treatment options that may not be effective if you wait for symptom improvement.


    I have other questions about the flu, who should I contact?

    If you have any additional questions relating to the flu, please visit the comprehensive CDC flu site or contact a medical care provider for further information