How do COVID-19 vaccines work?

Vaccine

The Moderna and Pfizer-BioNTech COVID-19 vaccines are messenger RNA vaccines (mRNA). mRNA provides the instructions your body needs to build a small protein that triggers an immune response to COVID-19 if you become infected.

More Frequently Asked Questions

How do I find out if I am eligible?
Are there any side effects?
How was the COVID-19 vaccine made so quickly?
Is the COVID-19 vaccine safe?
10 Common Questions about the COVID-19 Vaccine by Dr. Wilma Wooten
How long is the COVID vaccine effective?
Can I be excused from getting the COVID vaccine?
Should people with multiple health conditions get the COVID vaccine?
Is the vaccine effective to combat the new COVID strains?
Can you choose which vaccine to get?
What happens if you only get the first COVID vaccine and not the second dose?
Could flu deaths accidentally have been confused with COVID deaths?
Is there a COVID vaccine for children less than 18 years old?
Can you mix vaccines?
I have Tricare, not UCSD. How can I get the COVID vaccine?
What are your thoughts on the age distribution of the COVID vaccine?
What can I do if there are no appointments available to receive the COVID vaccine?
Can you get the COVID vaccine if you have allergies?
Can I be prioritized to receive the COVID vaccine if I live with a senior or healthcare worker?
Why should I get the COVID-19 vaccine?
Can the vaccine give you COVID-19?
Does the COVID-19 vaccine change my DNA?
How should I talk about the vaccine with someone who is afraid to take it?
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Figures and data reported on this site are provided by the Centers for Disease Control and the County of San Diego.

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