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Dr. Hotez: New CDC guidance on Covid-19 spread is reminder to be ‘vigilant’ about mask wearing

03:17

New CDC guidance says that it's not just being in contact with an infected person for 15 continuous minutes its being in contact with an infected person for a total of 15 minutes over a 24 hour period that could lead to Covid-19 spreading. Vaccine expert Dr. Peter Hotez, explains the new guidance with a reminder to be “vigilant” about mask wearing.