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Promising Johnson and Johnson vaccine may be behind schedule

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Though it’s still in clinical trials, Johnson & Johnson has been working on a one-dose vaccine that some say could be a game changer. But there also reports of production snags. NBC’s Gabe Gutierrez reports for TODAY.

Appearing:Savannah Guthrie
Tags: health, news, Editor's picks, big news, coronavirus, today
S2021 E02 minHighlightNews and InformationDaytime
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