inclusion criteria: * patient ≥ 18 years old * patient with sars-cov-2 pneumopathy documented by nasopharyngeal or bronchoalveolar lavage fluid rt-pcr or any documented clinical symptoms support by ct scan * patient with spao2 ≤ 94 % in room air (90% for patient with respiratory failure) and requiring an oxygen therapy * negative pregnancy test for women of childbearing age * informed and written informed consent (ic) obtained * patients with affiliation to the social security system

inclusion criteria: * patient ≥ 18 years old * patient with sars-cov-2 pneumopathy documented by nasopharyngeal or bronchoalveolar lavage fluid rt-pcr or any documented clinical symptoms support by ct scan * patient with spao2 ≤ 94 % in room air (90% for patient with respiratory failure) and requiring an oxygen therapy * negative pregnancy test for women of childbearing age * informed and written informed consent (ic) obtained * patients with affiliation to the social security system

inclusion criteria: - patient ≥ 18 years old - patient with sars-cov-2 pneumopathy documented by nasopharyngeal or bronchoalveolar lavage fluid rt-pcr or any documented clinical symptoms support by ct scan - patient with spao2 ≤ 94 % in room air (90% for patient with respiratory failure) and requiring an oxygen therapy - negative pregnancy test for women of childbearing age - informed and written informed consent (ic) obtained - patients with affiliation to the social security system

inclusion criteria: - patient ≥ 18 years old - patient with sars-cov-2 pneumopathy documented by nasopharyngeal or bronchoalveolar lavage fluid rt-pcr or any documented clinical symptoms support by ct scan - patient with spao2 ≤ 94 % in room air (90% for patient with respiratory failure) and requiring an oxygen therapy - negative pregnancy test for women of childbearing age - informed and written informed consent (ic) obtained - patients with affiliation to the social security system