Investigating COVID-19 Vaccine Impact on the Risk of Hospitalisation through the Analysis of National Surveillance Data Collected in Belgium., Erazo, Diana, Vincenti-Gonzalez Maria F., Van Loenhout Joris, Hubin Pierre, Vandromme Mathil, Maes Piet, Taquet Maxime, Van Weyenbergh Johan, Catteau Lucy, and Dellicour Simon , Viruses, 2022 Jun 16, Volume 14, Issue 6, (2022)