Participation to the study will be systematically proposed to all patients hospitalized fitting inclusion criteria. Patient's screening will be done in emergency department or hospital department with direct admission. Medical investigators explain the objectives of the studies, procedure and propose the patient to participate in the study. Socio-demographic data, clinical and virological data will be collected in an electronic clinical research form.~A follow-up at 1 and 3 months after hospitalization discharge will be scheduled to evaluate health status.~The remainder of respiratory samples that have been performed for care will be used for further testing depending on epidemiological situation and will be stored at -80°C.
This study is a prospective, multicentric, observational test negative design study on adults hospitalized for Severe Acute Respiratory Infection (SARI), regardless of their vaccination status.