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  2. Pfizer–BioNTech COVID-19 vaccine - Wikipedia

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

    The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, [2] [32] is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech. For its development, BioNTech collaborated with the American company Pfizer to carry out clinical trials, logistics, and manufacturing. [44] [45] It is authorized for use ...

  3. National Advisory Committee on Immunization - Wikipedia

    en.wikipedia.org/wiki/National_Advisory...

    Dose scheduling. In March 2021, amid supply shortages, NACI issued a strong recommendation that second doses of two-dose COVID-19 vaccines (such as the AstraZeneca, Moderna, and Pfizer vaccines) be given up to four months after the first, as opposed to the three-to-four week intervals used in the clinical trials and recommended by Health Canada ...

  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. FDA authorizes additional booster of Pfizer-BioNTech ... - AOL

    www.aol.com/fda-authorizes-additional-booster...

    "Based on an analysis of emerging data, a second booster dose of either the Pfizer-BioNTech or Moderna Covid-19 vaccine could help increase protection levels for these higher-risk individuals.”

  6. Pfizer vaccine very effective against Delta variant in ... - AOL

    www.aol.com/news/pfizer-vaccine-very-effective...

    The study found the estimated vaccine effectiveness against documented COVID-19 infection in adolescents was 90%, and 93% against symptomatic COVID-19, on days seven to 21 after the second dose.

  7. J&J says second shot boosts protection for moderate-severe ...

    www.aol.com/finance/j-j-says-second-shot...

    Johnson & Johnson said Tuesday a second shot of its COVID-19 vaccine given about two months after the first increased its effectiveness to 94% in the United States against moderate to severe forms ...

  8. COVID-19 vaccine clinical research - Wikipedia

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

    COVID-19 vaccine effectiveness was studied in adults without immunocompromising conditions in 10 US states between December 18, 2021 – June 10, 2022, when Omicron was prevalent. 3 doses of mRNA COVID-19 vaccines was 69% against COVID-19–associated hospitalization 7–119 days after the third vaccine dose and 52% against COVID-19 ...

  9. New COVID booster shots? What to know about Pfizer ... - AOL

    www.aol.com/covid-booster-shots-know-pfizer...

    New, modified versions of Pfizer’s and Moderna’s existing COVID-19 vaccines received a green light from the Food and Drug Administration to be used as booster shots on Wednesday, Aug. 31.

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