Moderna Seeks FDA Approval for 2 Covid Boosters, 4 Vaccines in Total

Moderna Inc. has filed for U.S. Food and Drug Administration clearance of a second Covid-19 booster shot for all adults, covering significantly more people than Pfizer Inc. and BioNTech SE’s earlier request for emergency authorization for those over 65. The application comes amid heated debate over how long vaccinations protect from infection and whether repeated shots are necessary to prevent severe disease and death. Several countries including Israel have started administering a fourth dose to adults, with data showing a fivefold increase in the production of infection-fighting antibodies.