Gamble on a Biotech Darling Looks to Pay Off

Moderna’s Covid-19 vaccine was cleared by U.S. regulators, the second vaccine to gain emergency authorization this month as a historic mass immunization effort ramps up across the country.

The Food and Drug Administration’s decision to grant the authorization on Friday for use by adults means that two of the six vaccine candidates identified by Operation Warp Speed are now available to the public, a feat accomplished in less than one year.