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Should I Get a COVID-19 Vaccine Booster Shot Now?

Jun 1 2022
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A booster shot is an additional dose of a vaccine. It’s given to someone whose immune response from their last dose has weakened over time. For example, you’ve likely had a booster shot of a tetanus vaccine as part of your regular immunizations.

By getting a booster shot, you remind your body how to fight a disease. And your immune system gears up to protect you if you are exposed to that disease.

Booster shots for COVID-19

It is possible for someone to test positive for COVID-19 after being vaccinated. However, vaccines still offer the best protection against severe illness.

The Food and Drug Administration (FDA) has authorized booster doses for all four COVID-19 vaccines available in the U.S. The booster shots are not new vaccines. They refer to an additional dose of the existing COVID-19 vaccines. The dose for a booster may be smaller than the original dose, depending on the person’s age.

Recommendations for booster shots depend on several factors:

  • Which vaccines the person has already received
  • The person’s age
  • Whether the person is immunocompromised, meaning they have:
    • Been receiving active cancer treatment for tumors or cancers of the blood
    • Received an organ transplant and are taking medicine to suppress the immune system
    • Received CAR-T-cell or hematopoietic stem cell transplant within the last two years or are taking medicine to suppress the immune system
    • Moderate or severe primary immunodeficiency (some examples include DiGeorge syndrome and Wiskott-Aldrich syndrome)
    • Advanced or untreated HIV infection
    • Active treatment with high-dose corticosteroids or other drugs that may suppress your immune system

The Centers for Disease Control and Prevention (CDC) has a new tool available to help you determine when or if you, or your child, can get one or more COVID-19 boosters. You can find the tool on their website

Read more information about the COVID-19 vaccines


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2 Comments

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Lana Hargrove

I was wondering if Mercy Health Paducah is planning on having drive thru clinics for the booster shot like they did for the regular covid shot. I'm due my booster in December.
November 04th, 2021 | 2:01pm

Mercy Health

Hi Lana, Mercy Health - Paducah does not currently have plans to do drive thru clinics for booster shots. Sorry about that!
December 09th, 2021 | 3:58pm

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