SARS-CoV-2 seroprevalence and determinants for salivary seropositivity among pupils and school staff: a prospective cohort study, Merckx, Joanna, Callies Milena, Kabouche Ines, Desombere I, Duysburgh Els, and Roelants Mathieu , Epidemiology and Infection, Jan-01-2023, Volume 151, (2023)