inclusion criteria: 1. hospitalization for acute respiratory failure requiring oxygen administration ≥3l/mn 2. age \> 18 years or older 3. presence of pneumonia 4. pcr sars-cov-2 positive in any biological sample in the last 7 days 5. patient affiliated to social security regime 6. written informed consent provided by the patient or alternatively by next-of-kin, or in emergency situations, prior to any protocol-specific procedures

inclusion criteria: 1. hospitalization for acute respiratory failure requiring oxygen administration ≥3l/mn 2. age \> 18 years or older 3. presence of pneumonia 4. pcr sars-cov-2 positive in any biological sample in the last 7 days 5. patient affiliated to social security regime 6. written informed consent provided by the patient or alternatively by next-of-kin, or in emergency situations, prior to any protocol-specific procedures

inclusion criteria: hospitalization for acute respiratory failure requiring oxygen administration ≥3l/mn age > 18 years or older presence of pneumonia pcr sars-cov-2 positive in any biological sample in the last 7 days patient affiliated to social security regime written informed consent provided by the patient or alternatively by next-of-kin, or in emergency situations, prior to any protocol-specific procedures

inclusion criteria: hospitalization for acute respiratory failure requiring oxygen administration ≥3l/mn age > 18 years or older presence of pneumonia pcr sars-cov-2 positive in any biological sample in the last 7 days patient affiliated to social security regime written informed consent provided by the patient or alternatively by next-of-kin, or in emergency situations, prior to any protocol-specific procedures

inclusion criteria: 1. hospitalization for acute respiratory failure requiring oxygen administration ≥3l/mn 2. age > 18 years or older 3. presence of pneumonia 4. pcr sars-cov-2 positive in any biological sample in the last 7 days 5. patient affiliated to social security regime 6. written informed consent provided by the patient or alternatively by next-of-kin, or in emergency situations, prior to any protocol-specific procedures

inclusion criteria: 1. hospitalization for acute respiratory failure requiring oxygen administration ≥3l/mn 2. age > 18 years or older 3. presence of pneumonia 4. pcr sars-cov-2 positive in any biological sample in the last 7 days 5. patient affiliated to social security regime 6. written informed consent provided by the patient or alternatively by next-of-kin, or in emergency situations, prior to any protocol-specific procedures