STAT News reports:
A new study suggests the messenger RNA vaccines produced by Moderna and the Pfizer-BioNTech partnership appeared to be 90% effective in preventing Covid-19 infection in a real-world setting.
The study was released Monday in Morbidity and Mortality Weekly Report, an online journal published by the Centers for Disease Control and Prevention.
The vaccine effectiveness following two doses was 90% — roughly in line with the 95% and 94% that the Pfizer and Moderna vaccines showed, respectively, in the clinical trials that supported their emergency use authorizations.
BREAKING: ‘Real world’ study by CDC shows Pfizer and Moderna vaccines were 90% effective. https://t.co/RKp1FwnPI4
— STAT (@statnews) March 29, 2021
One dose of Pfizer or Moderna vaccines was 80% effective in preventing Covid in CDC study of health workers https://t.co/uLZOg5JAlu
— CNBC Now (@CNBCnow) March 29, 2021