Pfizer says omicron booster is better against new subvariants like BQ.1.1 than old shots
November 18, 2022 at 10:51 AM EST
Pfizer said the booster triggered more antibodies against omicron BQ.1.1, BA.4.6, BA.2.75.2 and XBB.1 in adults older than 55 compared to the original vaccines.
