How many shots of COVID-19 vaccine will be needed?

The Pfizer and Moderna COVID-19 vaccines approved by the FDA for Emergency Use Authorization (EAU) in the United States require two shots to be effective. The timeline for receiving the second dose of the vaccine will vary based on the manufacturer. Both Pfizer and Moderna have demonstrated 95% efficacy when both doses are received. It takes about a week after the second dose to achieve that immune response.

Appointments for the second dose will be scheduled when the first dose is received.

  • Pfizer vaccine - 21 days after the first vaccination
  • Moderna vaccine - 28 days after the first vaccination

Show All Answers

1. Who will get a COVID-19 vaccine?
2. What Phase of vaccination is Coconino County in?
3. Where can I get vaccinated?
4. I am a resident of a different county. Can I get my vaccine in Coconino County?
5. I received my first dose at another location, can I receive second dose from Coconino County Health and Human Services?
6. How will CCHHS verify if someone is in a certain priority group?
7. Why did the County move to vaccinating priority populations within Phase 1b when my family member who lives in a congregate setting and therefore is part of 1a hasn’t received their vaccine yet?
8. When will individuals aged 65+ be eligible to receive a COVID-19 vaccination?
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. Do I need to wear a mask when I receive the COVID-19 vaccine?
13. Who SHOULDN’T be vaccinated?
14. Who is paying for the vaccine?
15. If I have already had COVID-19 and recovered, do I still need to get the COVID-19 vaccine when it’s available?
16. Do I need to wear a mask and avoid close contact with others if I have received 2 doses of vaccine?
17. When can I stop wearing a mask and avoiding close contact with others after I have been vaccinated?
18. How can I trust the vaccine will be safe?
19. How will adverse events and vaccine safety be monitored?
20. What side effects could there be from the vaccine?
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?