"Persons who received the BA.5-containing bivalent booster had better neutralizing activity against all Omicron subvariants (especially against BA.2.75.2, BQ.1.

"Persons who received the BA.5-containing bivalent booster had better neutralizing activity against all Omicron subvariants (especially against BA.2.75.2, BQ.1.1 and XBB) than those who received 1 or 2 monovalent [original] boosters" https://www.nejm.org/doi/full/10.1056/NEJMc2214293 https://www.nejm.org/doi/full/10.1056/NEJMc2214293