Medical intensive care unit at Jacques Cartier Hospital in Massy. All the beds in the service since the start of the Covid 19 pandemic have been reserved for the reception of patients in need of respiratory assistance. Hospital workers, nursing assistants, nurses, interns and doctors are mobilized with patients to ensure continuous care. To avoid any contamination, all staff must respect the rules for wearing masks, gowns, aprons, glasses and gloves. Management of a Covid 19 patient, transferred by Samu 91. First examinations and analyzes carried out by the doctor and all nursing staff.