Do you have questions about how mRNA vaccines protect you against COVID-19?

The mRNA in COVID-19 vaccines has information to teach your body how to fight the virus. The vaccine does not contain live virus, so it can’t give you COVID-19. It cannot change your DNA in any way.

The virus that causes COVID-19 has proteins, called “spike proteins,” on its surface. When you get an mRNA COVID-19 vaccine, the mRNA carries a “message” to your body that tells it how to make spike proteins. Your body’s immune system makes antibodies that help fight off the virus, so you don’t get sick.

If you are exposed to the real COVID-19 virus after being vaccinated, your body recognizes these proteins and tells… More

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