inclusion criteria: 1. suspected cases of covid-19, from clinical and radiological data, during the pandemic; 2. adult aged 18 years or older, at the time of inclusion (children under 18 will not be included due to the recognized lower lethality in previous published studies, and the difficulty of consent in the context of an emergency in public health); 3. spo2 ≤ 94% in room air or in use supplementary oxygen or under invasive mechanical ventilation

inclusion criteria: 1. suspected cases of covid-19, from clinical and radiological data, during the pandemic; 2. adult aged 18 years or older, at the time of inclusion (children under 18 will not be included due to the recognized lower lethality in previous published studies, and the difficulty of consent in the context of an emergency in public health); 3. spo2 ≤ 94% in room air or in use supplementary oxygen or under invasive mechanical ventilation

inclusion criteria: suspected cases of covid-19, from clinical and radiological data, during the pandemic; adult aged 18 years or older, at the time of inclusion (children under 18 will not be included due to the recognized lower lethality in previous published studies, and the difficulty of consent in the context of an emergency in public health); spo2 ≤ 94% in room air or in use supplementary oxygen or under invasive mechanical ventilation

inclusion criteria: suspected cases of covid-19, from clinical and radiological data, during the pandemic; adult aged 18 years or older, at the time of inclusion (children under 18 will not be included due to the recognized lower lethality in previous published studies, and the difficulty of consent in the context of an emergency in public health); spo2 ≤ 94% in room air or in use supplementary oxygen or under invasive mechanical ventilation

inclusion criteria: 1. suspected cases of covid-19, from clinical and radiological data, during the pandemic; 2. adult aged 18 years or older, at the time of inclusion (children under 18 will not be included due to the recognized lower lethality in previous published studies, and the difficulty of consent in the context of an emergency in public health); 3. spo2 ≤ 94% in room air or in use supplementary oxygen or under invasive mechanical ventilation

inclusion criteria: 1. suspected cases of covid-19, from clinical and radiological data, during the pandemic; 2. adult aged 18 years or older, at the time of inclusion (children under 18 will not be included due to the recognized lower lethality in previous published studies, and the difficulty of consent in the context of an emergency in public health); 3. spo2 ≤ 94% in room air or in use supplementary oxygen or under invasive mechanical ventilation