Association of vaccine-induced or hybrid immunity with COVID-19-related mortality during the Omicron wave -- a retrospective observational study in elderly Bavarians

Maximilian Weigert, Andreas Beyerlein, Katharina Katz +3

Background: There is a lack of population-based studies on the effectiveness and durability of the SARS-CoV-2-induced immune protection during the Omicron wave. Methods: This retro…