As vaccine rollouts pick up speed, the spread of COVID-19 is beginning to slow in the U.S. But it will worsen again without the right steps.
SHOW TRANSCRIPT
Bringing COVID-19 to a halt in the U.S. will require months more of social distancing, masks and vaccines. But the numbers are quickly getting better, and it's a sign of hope for a badly battered nation: There's a light at the end of the tunnel.