Comparative effectiveness of the bivalent BA.4-5 and BA.1 mRNA-booster vaccines in the Nordic countries https://www.medrxiv.org/content/10.1101/2023.01.19.23284764
Comparative effectiveness of the bivalent BA.4-5 and BA.1 mRNA-booster vaccines in the Nordic countries https://www.medrxiv.org/content/10.1101/2023.01.19.23284764
@medrxivpreprint #IDmastodon Vaccination with bivalent BA.4-5 or BA.1 mRNA-booster vaccines as a 4th dose was associated with increased protection against #Covid19 hospitalization and death during a period of BA.4-5 predominance. Bivalent BA.4-5 boosters conferred moderately greater vaccine effectiveness against Covid- 19 hospitalization compared with bivalent BA.1 boosters.
https://www.medrxiv.org/content/10.1101/2023.01.19.23284764v1.full.pdf