Bivalent COVID vaccine efficacy at 6 months drops 24% against hospitalization, strong against death --CDC study

Bivalent COVID vaccine efficacy at 6 months: 24% against hospitalization, strong against death CIDRAP

Estimated bivalent (two-strain) COVID-19 mRNA vaccine effectiveness (VE) against hospitalization dropped from 62% 1 week after receipt to 24% at 4 to 6 months in adults with healthy immune systems, but protection against severe outcomes was sustained, according to a US Centers for Disease Control and Prevention (CDC) study.

...