Experts are encouraged by early Covid-19 vaccine findings but warn the US will still face challenging months ahead

The US received more good news on the vaccine front this week -- with Moderna's clinical trial data showing its vaccine is more than 94% effective. But the country is still battling a Covid-19 crisis that's ravaging communities and hospital...

Experts are encouraged by early Covid-19 vaccine findings but warn the US will still face challenging months ahead
The US received more good news on the vaccine front this week -- with Moderna's clinical trial data showing its vaccine is more than 94% effective. But the country is still battling a Covid-19 crisis that's ravaging communities and hospital systems and is projected to get a lot worse before a possible vaccine could offer any help.