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  1. Apr 30, 2024 · The vaccine continues to be studied for its ability to provide protection against emerging variants like the Delta (B.1.617.2) variant and Omicron (B.1.1.529) variant. One study found three doses of the Moderna vaccine to be 99% effective against hospitalization from infection with either variant.

  2. How efficacious is the vaccine? The Moderna vaccine after two doses and a first booster dose has been shown to have very high effectiveness against severe disease, hospitalizations and death, and modest effectiveness against symptomatic illness. What’s the recommended dosage?

  3. 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
  4. Dec 22, 2020 · After releasing positive interim results from its phase 3 trial on Nov. 16, 2020, Moderna announced on Nov. 30 that its vaccine had an efficacy of 94.1% in preventing disease in adults. The...

  5. May 1, 2024 · 2023-2024 Moderna COVID-19 vaccine. In December 2020, the Moderna COVID-19 vaccine was found to be both safe and effective in preventing infection and serious illness among people age 18 or older. The vaccine's ability to protect younger people was predicted based on that clinical trial data.

  6. Mar 24, 2022 · COVID-19 mRNA vaccines (BNT162b2 [Pfizer-BioNTech] and mRNA-1273 [Moderna]) are effective at preventing COVID-19–associated hospitalization ( 13 ). However, how well mRNA vaccines protect against the most severe outcomes of these hospitalizations, including invasive mechanical ventilation (IMV) or death is uncertain.

  7. Dec 1, 2021 · Health. Moderna edges out Pfizer vaccine in head-to-head comparison. Nicole Rura. Harvard Chan School Communications. December 1, 2021 4 min read. Large-scale study finds Moderna slightly more effective in preventing COVID-19 infection, hospitalization, and death.

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