The project is an observational, prospective study. Its aim is to deepen our understanding of COVID-19 in older patients hospitalized and diagnosed with COVID-19. In particular, socioeconomic, diagnostic, biological, functional, therapy data will be collected at the patients' admission, during hospital stay, at the discharge and 1, 3, 6, 12 months after discharge. Results and findings will help support changes in clinical practice and decision making, with the aim to reduce the use of healthcare services and the healthcare expenditure.