Inclusion Criteria:  Aged 18 years or more Patients hospitalized between February 1st and June 30st 2020 for COVID-19 as the main diagnosis, using the following ICD-10 discharge codes: U07.10, U07.11, U07.14, U07.15 Patients alive at the date of discharge  Exclusion Criteria:  not affiliated to the French Social Security not meeting inclusion criteria