Inclusion Criteria:  all patients hospitalized in intensive care at Delafontaine hospital (12 intensive care beds and 6 CCU beds) and Ambroise Paré hospital (12 intensive care beds and 6 CCU beds) that has developed a Covid-19 pneumonitis confirmed biologically by nasopharyngeal PCR or on deep respiratory samples (bronchial, tracheal aspiration or bronchoalveolar lavage) or strongly suspected with a compatible CT27 and a very evocative clinical history depending on the practitioner in charge would be included into the study.  Exclusion Criteria:  all minor patients under the age of 18 and patients transferred after less than 24 hours of care in the service would be excluded.