Hospitalizations and In-Hospital Fatality Among Influenza Patients in the Pre-Pandemic and COVID-19 Pandemic Periods. - Kanecki, Krzysztof; Lewtak, Katarzyna; Tyszko, Piotr; Goryński, Paweł; Rząd, Michał; Okręglicka, Katarzyna; Nitsch-Osuch, Aneta (Journal of Clinical Medicine, 2025)