Can I Get a Covid-19 Booster Shot? Here’s How to Decide

Millions more Americans are slated to become eligible for Covid-19 booster shots now that the Food and Drug Administration has authorized additional doses for anyone who received Johnson & Johnson’s vaccine and certain high-risk populations who got Moderna Inc.'s.

The decision marks a critical step toward making boosters for all three vaccines broadly available in the U.S. Yet regulators acknowledged during a press call late Wednesday that different eligibility conditions for each vaccine could lead to complications in the booster rollout.

Acting FDA Commissioner Janet Woodcock said her agency has been working closely with the Centers for Disease Control and ...