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COVID Vaccine FAQ

1. Vaccinated persons with exposure to someone with suspected or confirmed COVID-19 are not required to quarantine if they meet all of the following criteria:  Interim Clinical Considerations for Use of mRNA COVID-19 Vaccines

  • Are fully vaccinated (i.e., ≥2 weeks following receipt of the second dose in a 2-dose series, or ≥2 weeks following receipt of one dose of a single-dose vaccine)

  • Are within 3 months following receipt of the last dose in the series

  • Have remained asymptomatic since the current COVID-19 exposure


2. Do I have to wear a mask and avoid close contact with others if I have gotten two doses of the vaccine? COVID-19 vaccine frequently asked questions

  • Yes. To protect yourself and others, follow these recommendations:

    • Wear a mask over your nose and mouth

    • Stay at least 6 feet away from others

    • Avoid crowds

    • Avoid poorly ventilated spaces

    • Wash your hands often

3.  If I have already had COVID-19 and recovered, do I still need to get vaccinated with a COVID-19 vaccine?

  • Yes, you should be vaccinated regardless of whether you already had COVID-19. That’s because experts do not yet know how long you are protected from getting sick again after recovering from COVID-19. Even if you have already recovered from COVID-19, it is possible—although rare—that you could be infected with the virus that causes COVID-19 again. 


4. Will I need to be tested for COVID-19 before getting the vaccine?


  • No, a COVID-19 test is not needed before getting the vaccine. 

5. Should someone who is COVID-19-positive receive the vaccine?

  • Not if they are symptomatic. Vaccination of people who are known to have COVID-19 should be delayed until they no longer have symptoms.

6What are the benefits of getting a COVID-19 vaccine?

  • We understand that some people may be concerned about getting vaccinated now that COVID-19 vaccines are available in the United States. Please visit Benefits of Getting a COVID-19 Vaccine | CDC for a summary of the benefits of COVID-19 vaccination based on what we currently know.


After getting vaccinated

1.  What should I do if I experience symptoms after receiving a COVID-19 vaccine, such as fever and body aches?

  • If you have any significant pain or discomfort, talk to your healthcare provider, who may recommend over-the-counter medicine, such as ibuprofen or acetaminophen. To reduce pain and discomfort where you got the shot apply a clean, cool, wet washcloth over the area, and use or exercise your arm.  To reduce discomfort from fever, drink plenty of fluids and dress lightly. In most cases, discomfort from fever or pain is normal, but contact your healthcare provider if:

  • the redness or tenderness where you got the shot increases after 24 hours

  • your side effects are worrying you or do not seem to be going away after a few days


2. How long after getting the COVID-19 vaccine does it take to be effective? 

  • It usually takes a few weeks for the body to build immunity after vaccination. That means it's possible a person could be infected with the virus that causes COVID-19 just before or just after vaccination and get sick. This is because the vaccine has not had enough time to provide protection.

3. How long does protection from the COVID-19 vaccines last?

  • We do not have data yet to say for how long the COVID-19 vaccines will provide protection from getting sick even if you do get COVID-19. Experts continue to conduct more studies about whether the vaccines also keep people from spreading COVID-19.

4. How effective is one dose of a COVID-19 vaccine compared to two doses?

  • The COVID-19 vaccines were not studied for use as a single dose. People should get both doses of the vaccine to be fully vaccinated in order to be effective.