Clustering and longitudinal change in SARS-CoV-2 seroprevalence in school children in the canton of Zurich, Switzerland: prospective cohort study of 55 schools.
Agne UlyteThomas RadtkeIrene A AbelaSarah R HaileChristoph BergerMichael HuberMerle SchanzMagdalena SchwarzmuellerAlexandra TrkolaJan FehrMilo A PuhanSusi KriemlerPublished in: BMJ (Clinical research ed.) (2021)
NCT04448717.