inclusion criteria: * age ≥ 18 years * patients hospitalized for less than 72 hours * non-smoking and non-vaping patients (for former smokers or former vapers: abstinent for at least 12 months) * documented diagnosis of covid19 * lung disease suggestive of covid-19 on chest scanner or need for oxygen therapy * obtaining, informed and signed consent * affiliated to a social security scheme or beneficiary of such a scheme (except ame)

inclusion criteria: * age ≥ 18 years * patients hospitalized for less than 72 hours * non-smoking and non-vaping patients (for former smokers or former vapers: abstinent for at least 12 months) * documented diagnosis of covid19 * lung disease suggestive of covid-19 on chest scanner or need for oxygen therapy * obtaining, informed and signed consent * affiliated to a social security scheme or beneficiary of such a scheme (except ame)

inclusion criteria: - age ≥ 18 years - patients hospitalized for less than 72 hours - non-smoking and non-vaping patients (for former smokers or former vapers: abstinent for at least 12 months) - documented diagnosis of covid19 - lung disease suggestive of covid-19 on chest scanner or need for oxygen therapy - obtaining, informed and signed consent - affiliated to a social security scheme or beneficiary of such a scheme (except ame)

inclusion criteria: - age ≥ 18 years - patients hospitalized for less than 72 hours - non-smoking and non-vaping patients (for former smokers or former vapers: abstinent for at least 12 months) - documented diagnosis of covid19 - lung disease suggestive of covid-19 on chest scanner or need for oxygen therapy - obtaining, informed and signed consent - affiliated to a social security scheme or beneficiary of such a scheme (except ame)

inclusion criteria: - age ≥ 18 years - patients hospitalized for less than 72 hours - non-smoking and non-vaping patients (for former smokers or former vapers: abstinent for at least 12 months) - documented diagnosis of covid19 - obtaining, informed and signed consent - affiliated to a social security scheme or beneficiary of such a scheme (except ame)

inclusion criteria: - age ≥ 18 years - patients hospitalized for less than 72 hours - non-smoking and non-vaping patients (for former smokers or former vapers: abstinent for at least 12 months) - documented diagnosis of covid19 - obtaining, informed and signed consent - affiliated to a social security scheme or beneficiary of such a scheme (except ame)