Your Evening Briefing: Pfizer Declares Its Vaccine is 95% Effective

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Pfizer said a final analysis of its clinical-trial data showed its Covid-19 vaccine, developed with the help of the German government and Germany-based BioNTech, was 95% effective, which may pave the way for the company to obtain regulatory authorizations for its use. Scientists however are calling for the release of more data on the new medicine—which faces huge logistical hurdles when it comes to distribution—so it can be independently reviewed and analyzed. Rivals including Moderna, meanwhile, are close behind with their own drugs, which may be easier to ship. The Pfizer statement comes a week after the pharmaceutical giant said it had positive preliminary information on the potential vaccine.

At the time, the company’s stock soared, and Chief Executive Officer Albert Bourla made $5.6 million selling his shares. —David E. RovellaBloomberg is mapping the pandemic globally and across America. For the latest news, sign up for our Covid-19 podcast and daily newsletter.Here are today’s top storiesAssuming peer review doesn’t yield any nasty surprises, there’s more...