FDA advisory committee to consider second COVID-19 vaccine, this one from Moderna, during all-day meeting

A second COVID-19 vaccine likely will receive a thumbs up Thursday from an advisory committee to the U.S. Food and Drug Administration, which authorized the first one a week ago.

This time, the committee is reviewing a vaccine made by Cambridge, Massachusetts, biotech Moderna, with similar technology and results as the one it supported last week by Pfizer and its German collaborator, BioNTech.

A clinical trial in 30,000 volunteers showed that the Moderna vaccine is more than 94% effective in preventing COVID-19, including serious disease. The vaccine causes frequent...