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.
Source: plos.org