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U.S. steps up fight against fast-spreading Omicron variant

The Biden administration is trying to step up the fight against the fast-spreading omicron variant by increasing access to free testing. Meanwhile, the CDC is advising people to wear the most protective masks they can find. Dr. Jeremy Faust, emergency physician at Brigham and Women's Hospital at Harvard Medical School, joins CBSN's Lana Zak for more.
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