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2. COVID-19 Vaccines - WebMD

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

   The vaccine should slow the spread of COVID-19 around the world. Fewer people should get sick, and more lives can be saved. The Pfizer, Moderna, and Novavax vaccines have been shown to be at least ...

3. Oxford–AstraZeneca COVID-19 vaccine - Wikipedia

   en.wikipedia.org/wiki/Oxford–AstraZeneca_COVID...

   The Oxford–AstraZeneca COVID‑19 vaccine is used to provide protection against infection by the SARS-CoV-2 virus in order to prevent COVID-19 in adults aged 18 years and older. [1] The medicine is administered by two 0.5 ml (0.017 US fl oz) doses given by intramuscular injection into the deltoid muscle (upper arm).

4. COVID-19 vaccination in the United States - Wikipedia

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

   The COVID-19 vaccination campaign in the United States is an ongoing mass immunization campaign for the COVID-19 pandemic in the United States. The Food and Drug Administration (FDA) first granted emergency use authorization to the Pfizer–BioNTech vaccine on December 10, 2020, [7] and mass vaccinations began four days later.

5. AstraZeneca Vaccine: What You Need to Know - Healthline

   www.healthline.com/health/adult-vaccines/astra...

   The AstraZeneca COVID-19 vaccine, now called Vaxzevria, is a viral vector vaccine, just like the Johnson & Johnson vaccine. It uses a chimpanzee adenovirus to carry spike proteins from the ...

6. Which COVID-19 Vaccine Is Best? - Healthline

   www.healthline.com/.../which-covid-vaccine-is-best

   Effectiveness of 2-dose vaccination with mRNA COVID-19 vaccines against COVID-19-associated hospitalizations among immunocompromised adults – nine states, January-September 2021. https://www.cdc ...

7. Who Is Eligible for a COVID-19 Booster? - Healthline

   www.healthline.com/health/adult-vaccines/who-is...

   Per the CDC, immunocompromised people ages 12 and older are also eligible for a COVID-19 vaccine booster. Some examples of people who are immunocompromised include people who: are taking drugs ...

8. COVID-19 vaccine - Wikipedia

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

   A COVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 , the virus that causes coronavirus disease 2019 . Prior to the COVID‑19 pandemic , an established body of knowledge existed about the structure and function of coronaviruses causing diseases like severe acute ...

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

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

   The CDC recommends an additional booster shot for certain people to amp up their immune system against potential COVID-19 variants. If you got the J&J Janssen vaccine as your first vaccine and ...