%0 Report %D 2021 %T Prevalence and incidence of antibodies against SARS-CoV-2 in children and school staff measured between December 2020 and June 2021: Findings of the first testing period %A Els Duysburgh %A Joanna Merckx %A Milena Callies %A Ines Kabouche %A Melissa Vermeulen %A Mathieu Roelants %A I Desombere %K Belgium %K CHILDREN %K COVID-19 %K SARS-CoV-2 %K School staff %8 2021 %G eng %M D/2021/14.440/10