1. Variation in SARS-CoV-2 seroprevalence across districts, schools and classes: baseline measurements from a cohort of primary and secondary school children in Switzerland. Issue 7 (26th July 2021) Authors: Ulyte, Agne; Radtke, Thomas; Abela, Irene Alma; Haile, Sarah R; Blankenberger, Jacob; Jung, Ruedi; Capelli, Celine; Berger, Christoph; Frei, Anja; Huber, Michael; Schanz, Merle; Schwarzmueller, Magdalena; Trkola, Alexandra; Fehr, Jan; Puhan, Milo Alan; Kriemler, Susi Journal: BMJ open Issue: Volume 11:Issue 7(2021) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗