Johnson & Johnson says second shot is 94% effective against coronavirus

Johnson & Johnson says second shot is 94% effective against coronavirus – CBS News

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Johnson & Johnson says a second dose of its one-shot coronavirus vaccine offers greater protection against the virus. CBS News’ Mark Strassmann reports on the key finding of the company’s newest study. Then, emergency medicine physician Dr. Hilary Fairbrother joins CBSN’s Elaine Quijano with her analysis of the day’s coronavirus headlines.

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