Pfizer says early analysis shows its Covid-19 vaccine is more than 90% effective

Pfizer says early analysis shows its Covid-19 vaccine is more than 90% effective

Drugmaker Pfizer said Monday an early look at data from its coronavirus vaccine shows it is more than 90% effective – a much better than expected efficacy if the trend continues.

The so-called interim analysis looked at the first 94 confirmed cases of Covid-19 among the more than 43,000 volunteers who got either two doses of the vaccine or a placebo. It found that fewer than 10% of infections were in participants who had been given the vaccine. More than 90% of the cases were in people who had been given a placebo.

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