Funding Information: Funding: The authors received no specific funding for this work. We gratefully acknowledge all data contributors, authors and their originating laboratories and the contribution of all physicians that collaborated in the VigiRSV network (VigiRSV network: Teresa Gouveia, Regina Viseu, Maria Zarcos, Ricardo Castro, Jorge Rodrigues, Virg\u00EDnia Martinez, Eurico Jorge Gaspar, Carlos Caldas, E...