The real-world findings suggest the shot could seriously reduce asymptomatic transmission.
It's also introducing a strike system that can lead to permanent account suspension.
He says Americans should be hopeful but not complacent.
It's a partial reversal from Facebook's previous position on vaccine misinformation.
But older Americans are most likely to die.
Doubling down on control measures would help — but the will is lacking.
Viruses mutate and evolve and the coronavirus is no different.
A new study suggests the universe is 13.77 billion years old, and a cosmic controversy grows.
There's no evidence yet that vaccines "prevent people from actually getting the infection," official warns.
The pandemic has shipping companies performing a high-stakes juggling act.