SARS-CoV-2 trends in Italy, Germany and Portugal and school opening during the period of Omicron variant dominance: A quasi experimental study in the EuCARE project oleh Federica Bellerba, Nils Bardeck, Michael Boehm, Oriana D'Ecclesiis, Sara Raimondi, Elisa Tomezzoli, Mafalda Silva Miranda, Inês Martins Alves, Daniela Alves, Ana Abecasis, Valeria Gabellone, Elisa Gabrielli, Giulia Vaglio, Elham Shamsara, Nico Pfeifer, Chiara Mommo, Francesca Incardona, Rolf Kaiser, Sara Gandini