This booster also may provide improved protection ... virus and one that coded for the spike protein of the BA.4 and BA.5 subvariants of omicron, which were dominant throughout the world at ...

4 and BA.5, the new vaccine retains activity against ... The 437-patient study – reported in June – compared a 50 µg booster dose of both vaccines on antibody levels one month after ...

1, and later BA.5, spike proteins in addition to the ancestral ... We found that, when administered as a third-dose booster following two doses of ancestral vaccine." A recent study found that ...