Health

A gamble pays off in ‘spectacular success’: How the leading coronavirus vaccines made it to the finish line

Halth

A gamble pays off in ‘spectacular success’: How the leading coronavirus vaccines made it to the finish line

The world’s hopes have weighed heavily on the quest to develop coronavirus vaccines, with an especially intense focus on two front-runners: one from Moderna, the other from Pfizer and BioNTech. Both were a speedy but risky — even controversial — bet, based on a promising but still-experimental medical technology.

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