BREAKING: Moderna's Covid vaccine is highly effective, FDA says, meaning Americans could soon have access to second vaccine

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Dec 15, 2020 BREAKING: Moderna's Covid vaccine is highly effective, FDA says, meaning Americans could soon have access to second vaccine Moderna's Covid-19 vaccine is 94 percent effective at preventing illness and appears to protect against infection as well, according to Food and Drug Administration documents released Tuesday. The findings clear the way for the vaccine to receive FDA authorization by the end of the week, meaning Americans could soon have access to two highly effective Covid vaccines.  Read More Get the NBC News Mobile App Follow NBC News Check out all of NBCNEWS Newsletters here. Update Preferences | Unsubscribe | Contact | Privacy Update Preferences Unsubscribe Contact Privacy