Pfizer Says Early Data Shows Covid-19 Vaccine 90 Percent Effective | NBC Nightly News

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Drug company Pfizer announced that its vaccine candidate was 90 percent effective in the group of drug trial volunteers who were known to be infected. » Subscribe to NBC News:…

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Young Girls React As Vice President-Elect Kamala Harris Makes History | NBC Nightly News

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As Kamala Harris becomes vice president-elect, NBC’s Morgan Radford talks to a group of girls and their moms about what this historic moment means to them. » Subscribe to NBC…

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