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2. Why Two Doses of COVID-19 Vaccine for Pfizer and Moderna?

   www.healthline.com/health/why-two-doses-of-covid...

   The bottom line. Some COVID-19 vaccines, such as those produced by Pfizer-BioNTech and Moderna, require two doses. Others, such as the Johnson & Johnson vaccine, only require one dose. Some ...

3. How Long After the Second Dose of the COVID-19 Vaccine Are ...

   www.healthline.com/health/how-long-after-the...

   If you get the Pfizer-BioNTech or Moderna vaccine, you’ll need two doses. You generally have full immunity about 2 weeks after getting your second dose. It’s currently unknown exactly how long ...

4. How to Tell If You're Fully Vaccinated Against COVID-19

   www.healthline.com/health/what-does-fully...

   The CDC considers people ages 12 and up fully vaccinated if they’ve received one of the updated bivalent boosters. In other words, if you got one of the original booster shots, you’ll want to ...

5. COVID Vaccine Booster: Everything You Need to Know - WebMD

   www.webmd.com/vaccines/covid-19-vaccine/covid-19...

   If you got the J&J Janssen vaccine as your first vaccine and first booster dose, the CDC recommends a second booster using an mRNA COVID-19 vaccine. You may get this at least 2 months after your ...

6. COVID-19 Vaccines - WebMD

   www.webmd.com/vaccines/covid-19-vaccine/covid-19...

   The CDC recommends the updated (bivalent)COVID-19 booster for everyone 5 years of age or older. The Pfizer-BioNTech updated (bivalent) booster can be given at least 2 months after the 2nd dose of ...

7. Is More Than One Dose of the COVID-19 Vaccine Necessary? - WebMD

   www.webmd.com/vaccines/covid-19-vaccine/video/...

   Both the Pfizer-BioNTech and Moderna vaccines require two doses to offer the full benefit. The first dose helps the immune system create a response against SARS-CoV-2, the virus that causes COVID-19.