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Pfizer says its COVID-19 vaccine is 95% effective in final clinical trial results analysis

Drugmaker Pfizer has provided updated analysis around its COVID-19 vaccine Phase 3 clinical trial data, saying that in the final result of its analysis of the 44,000-participant trial, its COVID-19 vaccine candidate proved 95% percent effective. This is a better efficacy rate than Pfizer reported previously, when it announced a 90% effectiveness metric based on preliminary analysis of the Phase 3 trial data.
This result also follows a preliminary data report from Moderna about their own Phase 3 trial of their vaccine candidate, which they reported showed 94.5% effectiveness. Pfizer and partner BioNTech’s vaccine is an mRNA-based preventative treatment, similar to the Moderna one, and now it looks like they should be roughly similar in efficacy – at least in the early offing, based on a limited sample of total cases and prior to peer review by the scientific community, which is yet to come.

Moderna reports its COVID-19 vaccine is 94.5% effective in first data from Phase 3 trial
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