%0 Report %D 2020 %T Prevalence and incidence of antibodies against SARS-CoV-2 in children measured for one year in Belgium: a sero-epidemiological prospective cohort study - questionnaire %A Joanna Merckx %A Melissa Vermeulen %A Vandermeulen, Corinne %A Mathieu Roelants %A I Desombere %A Els Duysburgh %K Belgium %K CHILDREN %K COVID-19 %K Pandemic 2020 %K SARS-CoV-2 %K seroprevalence study %I Sciensano %C Brussels, Belgium %8 2020 %G eng