FDA Panel Approves Half-Dose Booster for Moderna Vaccine

A US health adviser said Thursday that some Americans vaccinated with Moderna’s COVID-19 vaccine need to get half the boost to strengthen their defenses against the virus.

The Food and Drug Administration’s Advisory Board unanimously voted to recommend booster shots to older people and adults with other health problems, work, or living conditions that increase the risk of COVID-19.

This recommendation is non-binding, but it is an important step in expanding the US booster campaign to millions of Americans. Many people who took their first Pfizer shot at least six months ago have already taken boosters after the FDA approved their use last month.

In terms of dose, the first Moderna vaccination consists of two 100 microgram shots. However, Moderna states that one 50 microgram shot is sufficient for boosters.

The agency convened experts on Thursday and Friday to consider who should get the booster and when to consider for those who received the shots of Moderna and Johnson & Johnson earlier this year.

The FDA will use the advisor’s recommendations in making the final decision on both companies’ boosters. Given a positive decision, there are yet another hurdles. Next week, a panel convened by the Centers for Disease Control and Prevention will provide more detailed information on who should get it.

FDA Panel Approves Half-Dose Booster for Moderna Vaccine

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