| Active, not recruiting | N/A | 8894 | Europe, RoW | COVID-19 vaccination | University of Bologna, Universita di Verona, Hospital Universitario Virgen Macarena, Azienda Ospedaliera di Padova, Azienda Ospedaliero-Universitaria di Parma, Azienda Ulss 2 Marca Trevigiana, University College Dublin, Luxembourg Institute of Health, ICONA Foundation, University Medical Center Groningen, University of Buenos Aires, PENTA Foundation, Universiteit Antwerpen, Institut National de la Santé Et de la Recherche Médicale, France, Helmholtz Zentrum München, CINECA consorzio universitario italiano, Charite University, Berlin, Germany, Centre de Recherche Médicale de Lambaréné | SARS CoV 2 Infection, Vaccination; Infection, Breakthrough Infection | 07/23 | 11/24 | | |