How can I tell if I am having side effects from the vaccine or if I am sick?

Side effects are more common after the second dose of the COVID-19 vaccine than after the first dose and in people under 55 years of age.

The following are not side effects of vaccination and may be symptoms of COVID-19 or another infection:

  • cough
  • shortness of breath
  • runny nose
  • sore throat
  • loss of taste or smell

 If you have the above symptoms you should quarantine and get tested for COVID-19 as soon as possible. Continue using all the tools available to us to help stop this pandemic, like covering your mouth and nose with a mask, washing hands often, and staying at least 6 feet away from others. Together, COVID-19 vaccination and following CDC’s recommendations for how to protect yourself and others will offer the best protection from getting and spreading COVID-19.

Side effects of the vaccine and/or symptoms of COVID-19, include:

  • fever
  • chills
  • fatigue
  • headache
  • muscle pain
  • joint pain

If you are younger than 55 and the above symptoms are mild to moderate, start within 72 hours of vaccination, and end within 48 hours after they start, these are most likely vaccine side effects. Up to 83% of the population has one side effect after vaccination.[AD1]

However, if these symptoms start more than 72 hours after vaccination and/or do not end within 48 hours after they start, consult with your medical provider for next steps.





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1. Who will get a COVID-19 vaccine?
2. Who is eligible for COVID-19 vaccination in Coconino County?
3. Where can I get vaccinated?
4. Can minors/children get the COVID-19 vaccine?
5. I received my first dose at another location, can I receive second dose from Coconino County Health and Human Services?
6. I am a resident of a different county. Can I get my vaccine in Coconino County?
7. How will CCHHS verify if someone is in a certain priority group?
8. Why did the County move to vaccinating additional populations when my family member who lives in a congregate setting and therefore is part of 1a hasn’t received their vaccine yet?
9. What verification is needed for place of residence?
10. How many shots of COVID-19 vaccine will be needed?
11. What can I do to protect myself from getting COVID-19 until I am eligible to get the vaccine?
12. How can I tell if I am having side effects from the vaccine or if I am sick?
13. Do I need to wear a mask when I receive the COVID-19 vaccine?
14. Who SHOULDN’T be vaccinated?
15. Who is paying for the vaccine?
16. If I have already had COVID-19 and recovered, do I still need to get the COVID-19 vaccine when it’s available?
17. Do I need to wear a mask and avoid close contact with others if I have received 2 doses of vaccine?
18. When can I stop wearing a mask and avoiding close contact with others after I have been vaccinated?
19. How can I trust the vaccine will be safe?
20. How will adverse events and vaccine safety be monitored?
21. What if I feel sick after getting vaccinated?
22. How can I tell if I am having side effects or if I am sick?
23. What side effects could there be from the vaccine?