Infection confirmed by SARS-CoV-2 (RT-PCR of oro / nasopharyngeal material, or by the detection of IgM-class anti-SARS-CoV-2 antibody, or IgA, associated with a clinical picture suggestive of the disease). respiratory failure: patient on mechanical ventilation or with satO2 ? 93% in room air. Maximum of 10 days from the onset of symptoms. Age between 18 and 80 years. Formal agreement (signing the free and informed consent form- FICF- by the participant or by a member of his family) to participate in the study (it is worth remembering that the majority, or the totality, of the patients will not be in clinical conditions to agree or not to the proposal to participate in the study, therefore, the possibility of acceptance by first-degree relative, or second-degree relative in the absence of the former).

Infection confirmed by SARS-CoV-2 (RT-PCR of oro / nasopharyngeal material, or by the detection of IgM-class anti-SARS-CoV-2 antibody, or IgA, associated with a clinical picture suggestive of the disease). respiratory failure: patient on mechanical ventilation or with satO2 ? 93% in room air. Maximum of 10 days from the onset of symptoms. Age between 18 and 80 years. Formal agreement (signing the free and informed consent form- FICF- by the participant or by a member of his family) to participate in the study (it is worth remembering that the majority, or the totality, of the patients will not be in clinical conditions to agree or not to the proposal to participate in the study, therefore, the possibility of acceptance by first-degree relative, or second-degree relative in the absence of the former).