how vaccines work in the body?

Can I get COVID-19 after vaccination?
It typically takes a few weeks after vaccination for the body to build protection (immunity) against the virus that causes COVID-19. That means it is possible a person could still get COVID-19 just after vaccination. This is because the vaccine has not had enough time to provide protection. Mar 13, 2021
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How do vaccines work?
Vaccines train our immune systems to create proteins that fight disease, known as ‘antibodies’, just as would happen when we are exposed to a disease but – crucially – vaccines work without making us sick. Dec 31, 2020
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How does the body develop immunity to COVID-19?
Once you've been exposed to a virus, your body makes memory cells. If you're exposed to that same virus again, these cells recognize it. They tell your immune system to make antibodies against it. Sep 23, 2020
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How safe is the COVID-19 vaccine?
Millions of people have safely received a COVID-19 vaccine Over 52 million doses of COVID-19 vaccine were administered in the United States from December 14, 2020, through February 14, 2021. COVID-19 vaccines are safe and effective. Apr 6, 2021
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