Flexible and scalable participatory syndromic and virological surveillance for respiratory infections: Our experiences in The Netherlands - Tara Smit; Gesa Carstens; Wanda Han; Kirsten Bulsink; Jordy de Bakker; Mansoer Elahi; Rianne van Gageldonk-Lafeber; Susan van den Hof; Dirk Eggink; Albert Jan van Hoek (PLoS ONE, 2025)