A green light for a Covid-19 vaccine could come any day now in the US, but leading health experts warn the nation is only at the start of a winter that's projected to be one of the most difficult in the nation's history.

 

A green light for a Covid-19 vaccine could come any day now in the US, but leading health experts warn the nation is only at the start of a winter that's projected to be one of the most difficult in the nation's history. https://t.co/Bh7J2u9Xje

— CNN (@CNN) December 10, 2020