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Between seven and nine COVID-19 vaccines could be approved in the next two years

The world could get seven to nine vaccines over the next two years given historical vaccine success rates and the current pipeline of candidates. The outlook is even more optimistic if the full pipeline of candidates advances toward clinical trials—tripling the likely number of successful vaccines.

Two factors can help reveal vaccines’ potential for success.
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To read the article, see “On pins and needles: Will COVID-19 vaccines ‘save the world’?,” July 29, 2020.