inclusion criteria: 1. patient ≥ 18 years 2. documented diagnosis of covid 19 (according to the tests referenced on the list published on the website : https://covid-19.sante.gouv.fr.tests) 3. hospitalized in intensive care unit, intubated and mechanically ventilated for less than 48 hours 4. non-smoker and non-vaping or abstinent patient for at least 12 months 5. obtain written informed consent from a relative / relative / support person. in the absence of a close/relative/trusted person, the patient may be included according to the emergency procedure by the investigating doctor. 6. affiliated to a social security scheme or beneficiary of such a scheme (ame excluded)

inclusion criteria: 1. patient ≥ 18 years 2. documented diagnosis of covid 19 (according to the tests referenced on the list published on the website : https://covid-19.sante.gouv.fr.tests) 3. hospitalized in intensive care unit, intubated and mechanically ventilated for less than 48 hours 4. non-smoker and non-vaping or abstinent patient for at least 12 months 5. obtain written informed consent from a relative / relative / support person. in the absence of a close/relative/trusted person, the patient may be included according to the emergency procedure by the investigating doctor. 6. affiliated to a social security scheme or beneficiary of such a scheme (ame excluded)

inclusion criteria: patient ≥ 18 years documented diagnosis of covid 19 (according to the tests referenced on the list published on the website : https://covid-19.sante.gouv.fr.tests) hospitalized in intensive care unit, intubated and mechanically ventilated for less than 48 hours non-smoker and non-vaping or abstinent patient for at least 12 months obtain written informed consent from a relative / relative / support person. in the absence of a close/relative/trusted person, the patient may be included according to the emergency procedure by the investigating doctor. affiliated to a social security scheme or beneficiary of such a scheme (ame excluded)

inclusion criteria: patient ≥ 18 years documented diagnosis of covid 19 (according to the tests referenced on the list published on the website : https://covid-19.sante.gouv.fr.tests) hospitalized in intensive care unit, intubated and mechanically ventilated for less than 48 hours non-smoker and non-vaping or abstinent patient for at least 12 months obtain written informed consent from a relative / relative / support person. in the absence of a close/relative/trusted person, the patient may be included according to the emergency procedure by the investigating doctor. affiliated to a social security scheme or beneficiary of such a scheme (ame excluded)

inclusion criteria: 1. patient ≥ 18 years 2. documented diagnosis of covid 19 (according to the tests referenced on the list published on the website : https://covid-19.sante.gouv.fr.tests) 3. hospitalized in intensive care unit, intubated and mechanically ventilated for less than 48 hours 4. non-smoker and non-vaping or abstinent patient for at least 12 months 5. obtain written informed consent from a relative / relative / support person. in the absence of a close/relative/trusted person, the patient may be included according to the emergency procedure by the investigating doctor. 6. affiliated to a social security scheme or beneficiary of such a scheme (ame excluded)

inclusion criteria: 1. patient ≥ 18 years 2. documented diagnosis of covid 19 (according to the tests referenced on the list published on the website : https://covid-19.sante.gouv.fr.tests) 3. hospitalized in intensive care unit, intubated and mechanically ventilated for less than 48 hours 4. non-smoker and non-vaping or abstinent patient for at least 12 months 5. obtain written informed consent from a relative / relative / support person. in the absence of a close/relative/trusted person, the patient may be included according to the emergency procedure by the investigating doctor. 6. affiliated to a social security scheme or beneficiary of such a scheme (ame excluded)