The main objective of this study is to describe the incidence of thromboembolic events in a population of patients hospitalized in intensive care units in France for severe COVID-19. The secondary objective of this study is to describe the evolution of hemostasis parameters during the first two weeks of intensive care hospitalization and to evaluate the influence of different anticoagulation regimens on these parameters and on the incidence of thromboembolic events

Inclusion Criteria:

• Confirmed infection with the Sars-CoV-2 virus (RT-PCR)
• Hospitalization in Intensive Care Unit
• Age over 18 years Old

Exclusion Criteria:

• Refusal of the patient to participate in data collection

Patients with a confirmed infection with the Sars-CoV-2 virus