US FDA panel backs Moderna coronavirus booster shot for older and high-risk people
- The pharmaceutical firm is seeking authorisation for a half-strength third dose containing 50 micrograms of vaccine
- The group of expert advisers to the Food and Drug Administration will weigh whether to make a similar recommendation for J&J’s vaccine on Friday

If the FDA signs off on Moderna’s booster, the US Centres for Disease Control and Prevention will make specific recommendations on who should get the shots. CDC advisers are expected to meet next week.
The FDA’s Vaccines and Related Biological Products Advisory Committee met on Thursday to consider the additional dose of the Moderna vaccine and will weigh whether to make a similar recommendation for Johnson & Johnson’s vaccine on Friday.
The vote to back Moderna’s booster was 19-0.

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Moderna is seeking authorisation of a booster that contains 50 micrograms of vaccine, half of strength of its regular dose but still higher than the Pfizer/BioNTech shot at 30 micrograms.