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Babouee Flury, Baharak; Güsewell, Sabine; Egger, Thomas; Leal, Onicio; Brucher, Angela; Lemmenmeier, Eva; Meier Kleeb, Dorette; Möller, J Carsten; Rieder, Philip; Rütti, Markus; Schmid, Hans-Ruedi; Stocker, Reto; Vuichard-Gysin, Danielle; Wiggli, Benedikt; Besold, Ulrike; McGeer, Allison; Risch, Lorenz; Friedl, Andrée; Schlegel, Matthias; Kuster, Stefan P; ... (2022). 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. PLoS medicine, 19(11), e1004125. Public Library of Science 10.1371/journal.pmed.1004125
