With AstraZeneca’s long-awaited Covid-19 vaccine approaching UK approval, peer-reviewed data shows the jab to be 70 percent effective. Behind that number, however, lurks a confusing backstory.
Developed in partnership with Oxford University, AstraZeneca’s Covid-19 vaccine was found to be 70.4 percent effective in a peer-reviewed study published in The Lancet medical journal on Tuesday. It may seem like a low number, compared to the roughly 95 percent effectiveness touted by rival firms Pfizer and Moderna, yet the figure is the first claim of effectiveness to be peer-reviewed in a medical journal.
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