Variation in SARS-CoV-2 seroprevalence across districts, schools and classes: baseline measurements from a cohort of primary and secondary school children in Switzerland.
Agne UlyteThomas RadtkeIrene Alma AbelaSarah R HaileJacob BlankenbergerRuedi JungCeline CapelliChristoph BergerAnja FreiMichael HuberMerle SchanzMagdalena SchwarzmuellerAlexandra TrkolaJan FehrMilo Alan PuhanSusi KriemlerPublished in: BMJ open (2021)
NCT04448717.
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