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Moderna says its booster shot appears to be effective against variants

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Moderna has announced that its booster shot, a third dose given 6 to 8 months after the initial two-dose vaccine, is showing to be effective in clinical trials against highly contagious variants. NBC’s Miguel Almaguer reports for TODAY.

Appearing:Savannah Guthrie
Tags: health, news, Editor's picks, big news, coronavirus, Plan Your Vaccine, today
S2021 E01 minHighlightNews and InformationDaytime
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