Moderna to Push Backup Experimental Flu Shot After Setback (3)

Moderna Inc.’s first experimental flu shot didn’t accumulate enough data to determine efficacy in a final-stage study, and the company said it will advance another candidate.

Moderna tested its messenger RNA flu shot against a traditional vaccine in a trial of about 23,000 people age 50 and older in the northern hemisphere. An independent panel of scientific advisers recommended that the research continue to gather more data. Moderna plans to start a final-stage study of an updated version of the vaccine this month, according to a statement Tuesday. The shares fell as much as 4.9% at the New York ...