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  1. Pfizer-BioNTech COVID-19 Vaccine Overview and Safety | CDC › coronavirus › 2019-ncov

    Apr 05, 2021 · Based on evidence from clinical trials, the Pfizer-BioNTech vaccine was 95% effective at preventing laboratory-confirmed COVID-19 illness in people without evidence of previous infection. CDC will continue to provide updates as we learn more about how well the Pfizer-BioNTech vaccine works in real-world conditions.

  2. Pfizer Vaccine Still Very Effective Against This Coronavirus ... › health-news › pfizer-vaccine

    Apr 13, 2021 · Clinical trials show that the Pfizer-BioNTech COVID-19 vaccine has a very high efficacy — 95 percent — against symptomatic infection. Real-world studies show a similar high effectiveness ...

  3. Pfizer Covid vaccine is 91% effective in updated data ... › 2021/04/01 › pfizer-covid-vaccine-is

    Apr 01, 2021 · Pfizer and BioNTech said their vaccine is around 91% effective at preventing the disease, citing data that included people inoculated for up to six months.

  4. Pfizer and BioNTech say their vaccine is 91% effective ... › news › covid-vaccine-pfizer

    Apr 01, 2021 · Pfizer and BioNTech said Thursday that their COVID-19 vaccine is "highly effective" after a new study showed it is more than 91% effective in preventing the disease. The study is based on more than...

  5. Pfizer COVID-19 vaccine found to be 94% effective in real ... › news › pfizer-covid-19-vaccine

    Feb 25, 2021 · The study, involving about 1.2 million people total, showed just one shot of the vaccine is 57% effective in protecting against symptomatic infections after two weeks. The vaccine also proved to be...

  6. How effective is the first shot of the Pfizer or Moderna vaccine? › effective-first-shot-pfizer

    Mar 19, 2021 · A recent study in Israel showed that a single dose of the Pfizer COVID-19 vaccine is highly effective, up to 85%.. The Sheba Medical Center reported its experience with vaccinating its nearly 10,000 staff members with the Pfizer COVID-19 vaccine.

  7. Pfizer Vaccine Is 90% Effective 3 Weeks After First Shot ... › news › health-news

    Feb 03, 2021 · Pfizer Vaccine Is 90% Effective 3 Weeks After First Shot, Early Study Shows. WEDNESDAY, Feb. 3, 2021 (HealthDay News) -- Just one dose of Pfizer's coronavirus vaccine might be enough to largely ...

  8. Apr 01, 2021 · Pfizer/BioNTech says its Covid-19 vaccine is 100% effective and well tolerated in adolescents The findings indicate protection will last even longer than six months, vaccine experts said. "The...

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