Moderna asks FDA to authorize second booster shot for all adults

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Immunocompromised people are already authorized to receive fourth doses of messenger RNA vaccines. Pfizer and BioNTech asked FDA Tuesday to authorize a second booster for adults 65 and older.

The request is partially based on data recently generated in the United States and Israel after the more transmissible Omicron variant emerged, according to Moderna. The company is still running clinical trials of Omicron-specific boosters.

FDA is set to convene its advisory committee of vaccine experts next month to deliberate how to approach Covid booster shots moving forward, including whether and when they’ll be needed and for which populations.

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