%0 Report %D 2021 %T Protocol COVID-19 Surveillance in residential institutions - version 5.2 %A Sara Dequeker %A Katrien Latour %A Esma Islamaj %A Laura Int Panis %A Milena Callies %A Lucy Catteau %A Boudewijn Catry %A Natalia Bustos Sierra %A Françoise Renard %A Eline Vandael %I Sciensano %C Brussels, Belgium %P 17 %8 02/07/2021 %G eng