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Do the COVID vaccines change your DNA?

Health care workers answer questions about the COVID-19 vaccines.


Janice Blanchard, MD, PhD explains that the COVID vaccines do not alter or affect your DNA in anyway.


No , no. What the vaccine is doing, it’s just actually your body is helping your body do what it naturally does. It’s not doing anything different. It’s not changing who you are. It’s not changing your DNA.

It’s just helping you make these antibodies and antibodies are what you make when you get sick already. You make specific antibodies to fight different types of diseases. So, this is just helping you make an antibody that will fight COVID.

This information is shared for educational purposes only and should not be used as a substitute for professional medical advice. The views expressed are those of the featured medical professional and reflect information available to that professional at time of filming. Always consult a health care provider for any personal health decisions. Click here for vaccine FAQs from the CDC.

Stay up to date with your COVID vaccine, including boosters!

COVID vaccines are safe and effective for everyone ages 6 months and older.

Immunity wanes over time. Keep up your protection against COVID by getting boosted when eligible.

Updated boosters are available for adults and children 6 months and older.