Yahoo Web Search

Search results

  1. May 6, 2021 · In a multistate network of U.S. hospitals during January–March 2021, receipt of Pfizer-BioNTech or Moderna COVID-19 vaccines was 94% effective against COVID-19 hospitalization among fully vaccinated adults and 64% effective among partially vaccinated adults aged ≥65 years.

    • Mark W. Tenforde, Samantha M. Olson, Wesley H. Self, H. Keipp Talbot, Christopher J. Lindsell, Jay S...
    • 2021
  2. Jan 12, 2022 · Several observational studies have assessed the waning effectiveness of Covid-19 vaccines over time. 4-12 These studies typically included estimates of vaccine effectiveness for broad time periods...

  3. Mar 11, 2021 · Vaccine effectiveness was at least 97% against symptomatic COVID-19 cases, hospitalizations, severe and critical hospitalizations, and deaths. Furthermore, the analysis found a vaccine effectiveness of 94% against asymptomatic SARS-CoV-2 infections. For all outcomes, vaccine effectiveness was measured from two weeks after the second dose.

  4. Nov 18, 2020 · Primary efficacy analysis demonstrates BNT162b2 to be 95% effective against COVID-19 beginning 28 days after the first dose;170 confirmed cases of COVID-19 were evaluated, with 162 observed in the placebo group versus 8 in the vaccine group.

  5. A clinical trial demonstrated that the vaccine has an efficacy rate of over 90 percent in preventing Covid-19. Producing a batch of the Pfizer-BioNTech vaccine currently takes 60 days. A...

  1. People also search for