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Pfizer says COVID-19 vaccine 95% effective, to seek emergency-use authorization

Pfizer Inc on Wednesday said a final analysis of clinical-trial data showed its Covid-19 vaccine was 95% effective, paving the way for the company to apply for the first US regulatory authorization for a coronavirus shot within days. The US drugmaker and partner BioNTech SE said their vaccine protected people of all ages and ethnicities, with no significant safety problems so far in a trial that included almost 44,000 participants.

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