A healthcare worker prepares to inject an AstraZeneca coronavirus disease (COVID-19) vaccine.
AstraZeneca issued updated Phase 3 trial data for its Covid-19 vaccine on Wednesday after facing criticism earlier this week over a preliminary report.
The company now says its vaccine is 76% effective in protecting against symptomatic cases of virus. A release earlier this week reported a symptomatic efficacy rate of 79%. Both reports from the company indicated the vaccine is 100% effective against severe disease and hospitalization.
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