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Researchers found that Johnson & Johnson recipients who got a Moderna booster experienced a 76-fold boost in their antibody levels, compared with a fourfold boost after a 2nd Johnson & Johnson dosage. Next week, a vaccine advisory panel to the Centers for Disease Control and Prevention will make its own suggestion on Johnson & Johnson boosters. People must seek advice from with their doctors about whether it makes sense to get a Johnson & Johnson booster as soon as it is licensed or wait for a possible mRNA booster, Dr. Schaffner said.

Researchers found that Johnson & Johnson recipients who received a Moderna booster experienced a 76-fold boost in their antibody levels, compared with a fourfold increase after a 2nd Johnson & Johnson dosage. At Friday’s meeting, Dr. Ofer Levy, director of the Precision Vaccines Program at Boston Children’s Hospital and a member of the advisory committee, encouraged regulators to move promptly, keeping in mind that many Johnson & Johnson receivers had currently looked for out unauthorized mRNA boosters on their own. Next week, a vaccine advisory panel to the Centers for Disease Control and Prevention will make its own recommendation on Johnson & Johnson boosters. It is possible