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2. I Missed My 2nd Vaccine Shot: What Do I Do Now? - AOL

   www.aol.com/missed-2nd-vaccine-shot-now...

   Getting the second dose gives you full immunity after another two weeks. Both the Pfizer-BioNTech and Moderna vaccine are about 95 percent effective after that second dose.

3. How to get your second COVID-19 booster shot if you are ... - AOL

   www.aol.com/news/second-covid-19-booster-shot...

   Here's how to get your second COVID-19 booster shot if you are 50 or older. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach ...

4. Who really needs a second COVID booster? Here's what to ... - AOL

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   Many Americans now can get a second COVID-19 booster, but it’s hard to tell who really needs another shot right now and who could wait. The Food and Drug Administration authorized extra Pfizer ...

5. Pfizer–BioNTech COVID-19 vaccine - Wikipedia

   en.wikipedia.org/wiki/Pfizer–BioNTech_COVID-19...

   The EMA clarified that the second dose should be administered three weeks after the first dose. [195] Cumulative incidence curves for symptomatic COVID‑19 infections after the first dose of the Pfizer–BioNTech vaccine (tozinameran) or placebo in a double-blind clinical trial (red: placebo; blue: tozinameran) [196]

6. COVID-19 vaccine clinical research - Wikipedia

   en.wikipedia.org/wiki/COVID-19_vaccine_clinical...

   In Com-COV2, the first dose is the Oxford–AstraZeneca vaccine or the Pfizer vaccine, and the second dose is the Moderna vaccine, the Novavax vaccine, or a homologous vaccine equal to the first dose, with an interval of 56 or 84 days between doses. [333]

7. Moderna COVID-19 vaccine - Wikipedia

   en.wikipedia.org/wiki/Moderna_COVID-19_vaccine

   In October 2021, the European Medicines Agency (EMA) stated that people with "severely weakened" immune systems can receive an extra dose of either the Pfizer–BioNTech COVID-19 vaccine or the Moderna COVID-19 vaccine starting at least 28 days after their second dose. [69]

8. CDC recommends second COVID vaccine dose for those 65 ... - AOL

   www.aol.com/news/cdc-recommends-second-covid...

   Immunocompromised adults or those who are older than 65 should get a second dose of the latest COVID-19 vaccine, the Centers for Disease Control and Prevention (CDC) officially recommended.

9. Booster dose - Wikipedia

   en.wikipedia.org/wiki/Booster_dose

   A booster dose is an extra administration of a vaccine after an earlier dose. After initial immunization , a booster provides a re-exposure to the immunizing antigen . It is intended to increase immunity against that antigen back to protective levels after memory against that antigen has declined through time.