Risk and symptoms of COVID-19 in health professionals according to baseline immune status and booster vaccination during the Delta and Omicron waves in Switzerland—A multicentre cohort study
In this multi-centre cohort study from Switzerland, Dr Christian R. Kahlert and colleagues investigate the risk and symptoms of COVID-19 among healthcare professionals, according to baseline immune status and booster vaccination, during the Delta and Omicron waves.
Switzerland General Reto Stocker Danielle Vuichard Gysin Allison Mcgeer Philipp Kohler Jamesg Beeson
Source: plos.org