The new version of their Comirnaty vaccine includes mRNA for the spike protein of the wild-type SARS-CoV-2 that first emerged in late 2019, as well as for the BA.4 and BA.5 subvariants of the now-dominant Omicron variant. It will also be filed in the EU within the next few days, said Pfizer.
“Having rapidly scaled up production, we are positioned to immediately begin distribution of the bivalent Omicron BA.4/BA.5 boosters, if authorised, to help protect individuals and families as we prepare for potential fall and winter surges,” said Pfizer chief executive Albert Bourla.
