<style face="normal" font="default" size="100%">Prevalence and incidence of antibodies against SARS-CoV-2 in children and school staff measured between December 2020 and June 2021: Findings of the second testing period – brief summary</style>

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<style face="normal" font="default" size="100%">Prevalence and incidence of antibodies against SARS-CoV-2 in children and school staff measured between December 2020 and June 2021: Findings of the second testing period – brief summary</style>