Johnson and Johnson ask the FDA to allow extra shots of its COVID-19 vaccine as the U.S. government moves toward expanding its booster campaign to millions more vaccinated American. The FDA's Vaccine and Related Biological products Advisory Committee is scheduled to meet October 14 and 15 to consider request from Mordena and Johnson & Johnson to add booster doses for their COVID-19 vaccine.
The boosting Janseem's vaccine two months after the first shot increased antibody response fourfold, the company said, and was associated in real life with 94% effectiveness. You've to waiting until six months to boost increase antibody protection 12-fold, the company said last month.
In asking for FDA authorization for a booster, Pfizer present data showing vaccine efficacy was waning over time. Mammen said that doesn't happen with janseen's shot.
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