Bivalent mRNA COVID-19 vaccines have been developed to provide broader protection against SARS-CoV-2 variants. In this cohort study based on electronic health records from the United States, the authors estimate the effectiveness of bivalent, compared to monovalent, vaccines and no vaccination against a range of COVID-19-related outcomes.
- Hung Fu Tseng
- Bradley K. Ackerson
- Lei Qian
