What is an mRNA vaccine?

According to the CDC, mRNA vaccines are a new type of vaccine to protect against infectious diseases. To trigger an immune response, many vaccines put a weakened or inactivated germ into our bodies. mRNA vaccines do not work that way. Instead, they teach our cells how to make a protein—or even just a piece of a protein—that triggers an immune response inside our bodies. That immune response, which produces antibodies, is what protects us from getting infected if the real virus enters our bodies.

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1. I completed the vaccine interest survey, when will I get vaccinated?
2. Can I show up at a vaccine site and get vaccinated without an appointment?
3. How do I register for an appointment to get vaccinated?
4. Why is the Health Department only scheduling appointments a week at a time?
5. What is an mRNA vaccine?
6. I don't have access to a computer, how can I schedule an appointment?
7. I completed the vaccine interest survey under Phase 1B, but now I am in Phase 1A. Do I need to complete the survey again?
8. I’ve already had COVID-19. Can I still get the vaccine?
9. What are the side effects of the COVID-19 vaccine?
10. Can I get COVID-19 from the vaccine?
11. What percentage of the population needs to get vaccinated to achieve herd immunity?
12. With the availability of the vaccine does this mean the pandemic is over?
13. Can I receive a Moderna vaccine for my first shot and a Pfizer vaccine for my second shot?
14. Why can’t children under 16 receive the vaccine?
15. How long will it take for the vaccine to begin protecting me?
16. What does the Chester County Health Department do if there are doses left over at the end of a vaccine clinic?
17. How does the COVID-19 vaccine work?
18. Does the COVID-19 vaccine use a live virus?
19. I live in one county/state and work in another. Where should I get vaccinated?
20. Why should I get the COVID-19 vaccine?
21. What should I do if I experience side effects from the vaccine?
22. Will the vaccine prevent me from getting COVID?
23. How many doses of the COVID-19 vaccine do I need to get?
24. What if I miss the second dose of the vaccine?
25. Will I need to receive the vaccine annually?
26. Do I still need to wear a mask after getting the vaccine?
27. How are other areas vaccinating people in Phase 1B/1C and Chester County is vaccinating individuals in Phase 1A?
28. I received my first vaccine out-of-state/at another provider. Can I receive my second shot through the Chester County Health Department?
29. I have a preference on which vaccine I receive. Can I submit my vaccine preference to the Health Department?