COVID-19 - Study of the Kinetics of the Immune Response During the Intensive Care Unit Stay in Adult Patients Infected With SARS-CoV-2: Multicentric Non Interventional Study

Infection with the SARS-CoV-2 coronavirus (COVID-19) has recently been identified as apandemic due to the speed and global scale of its transmission. In Auvergne-Rhône-Alpesregion (AURA), the epidemic began in February 2020 and the number of infected people isstill important. Between 15 and 20% of COVID-19 patients develop an acute respiratorydistress syndrome (ARDS) leading to their hospitalization in intensive care. Theirclinical progression can be rapidly harmful with the development of severe ARDSassociated with an increased risk of death.Preliminary data on the immune response of COVID-19 patients describe the induction of amoderate inflammatory response and the occurrence of major progressive lymphopenia overtime associated with potential immunosuppression. Up to 50% of secondary infections arereported in deceased COVID-19 patients. However, no prospective study has exhaustivelydescribed the kinetics of the immune response of COVID-19 patients in intensive care.The precise description of the immune response over time in adult patients with a proveninfection with the SARS-CoV-2 virus and the study of the relation between this responseand the increased risk of organ failure (severe ARDS), death or nosocomial infection willallow us to better understand the pathophysiology of the immune response induced byCOVID-19 in order to (i) identify new therapeutic strategies targeting the host responsein patients in intensive care (ii) to develop biological markers to stratify patients forfuture clinical trials evaluating these immunoadjuvant treatments in COVID-19.