More vaccines, More protection?

A preprint of a study of 51,011 employees from the Cleveland Clinic in the United States. This was a relatively young population, with a mean age of 42 years. Subjects with more bivalent COVID-19 vaccines were associated with higher cumulative COVID-19 incidence.

Effectiveness of the Coronavirus Disease 2019 (COVID-19) Bivalent Vaccine. Nabin K.

Shrestha, Patrick C. Burke, Amy S. Nowacki, James F. Simon, Amanda Hagen, Steven M. Gordon medRxiv; DOI: https://doi.org/10.1101/2022.12.17.22283625