Vaccine effectiveness against symptomatic SARS-CoV-2 infection in adults aged 65 years and older in primary care: I-MOVE-COVID-19 project, Europe, December 2020 to May 2021 by Kissling, E, Hooiveld, M, Sandonis Martín, V, Martínez-Baz, I, William, N, Vilcu, A-M, Mazagatos, C, Domegan, L, de Lusignan, S, Meijer, A, Machado, A, Brytting, M, Casado, I, Murray, J-LK, Belhillil, S, Larrauri, A, O'Donnell, J, Tsang, R, de Lange, M, Rodrigues, AP, Riess, M, Castilla, J, Hamilton, M, Falchi, A, Pozo, F, Dunford, L, Cogdale, J, Jansen, T, Guiomar, R, Enkirch, T, Burgui, C, Sigerson, D, Blanchon, T, Martínez Ochoa, EM, Connell, J, Ellis, J, van Gageldonk-Lafeber, R, Kislaya, I, Rose, AM, Valenciano, M