Evolution of SARS-CoV-2 seroprevalence and clusters in school children from June 2020 to April 2021: prospective cohort study Ciao Corona

CONCLUSIONS: Although the proportion of seropositive children increased from 1.5% in June-July 2020 to 16.4% in March-April 2021, few infections were likely associated with potential spread within schools. In March-April 2021, significant clustering of seropositive children within classes was observed only in the lower school level.PMID:34797618 | DOI:10.4414/smw.2021.w30092

Source: Swiss Medical Weekly - November 19, 2021 Category: General Medicine Authors: Agne Ulyte Thomas Radtke Irene A Abela Sarah R Haile Priska Ammann Christoph Berger Alexandra Trkola Jan Fehr Milo A Puhan Susi Kriemler Source Type: research