Vaccine advisers to the US Food and Drug Administration voted unanimously Friday to recommend a booster dose of Johnson & Johnson’s vaccine at least two months after people get the first dose. The FDA’s Vaccines and Related Biological Products Advisory Committee voted 19-0 to recommend the extra dose for all recipients of the J&J Janssen vaccine, 18 and older. The FDA will now consider the committee’s advice. Then the US Centers for Disease Control and Prevention’s vaccine advisers will be asked to consider it.
Johnson & Johnson says studies have shown boosting at two or six months can bring that effectiveness up to 94% and it says its effectiveness does not wane over time in the same way that effectiveness from Pfizer’s vaccine does.
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