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How COVID-19 Vaccines Work –  There are three types of vaccines currently available: mRNA, subunit protein, and viral vector. Pfizer and Moderna are mRNA vaccine. Novavax is a subunit protein vaccine. Janssen is a viral vector vaccine.  All products resemble a virus for the immune system to fight.

How COVID-19 Vaccines Work –
There are three types of vaccines currently available: mRNA, subunit protein, and viral vector. Pfizer and Moderna are mRNA vaccine. Novavax is a subunit protein vaccine. Janssen is a viral vector vaccine. All products resemble a virus for the immune system to fight.

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Last Updated: August 18, 2022
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