COVID-19 cases, hospitalizations and deaths in Belgian nursing homes: results of a surveillance conducted between April and December 2020, Vandael, Eline, Latour Katrien, Islamaj Esma, Int Panis Laura, Callies Milena, Haarhuis Freek, Proesmans Kristiaan, Devleesschauwer Brecht, Rebolledo Javiera, Hannecart Alice, et al. , Archives of Public Health, Jan-12-2022, Volume 80, Issue 1, (2022)