Since December 2019, an international outbreak of respiratory illnesses caused by SARS-CoV-2 called covid-19 has become a global challenge. In France, while the first cases were reported in January, more than 20 000 cases were confirmed at end of March. Early estimations from epidemiological data seem to show that 18-20% of patients with confirmed covid-19 are admitted in an intensive care unit (ICU). Patients with chronic inflammatory rheumatism, auto-immune or auto-inflammatory rare and non-rare diseases are susceptible to severe covid-19 (i.e ICU) due to the specific therapeutic management of their illness (corticosteroid, immunosuppressive and immunomodulatory drugs,..). No data are available for this particular population in France.

This retrospective multicentre observational study aims to evaluate the frequency of severe forms of covid-19 and risk factors associated with specific outcomes in covid-19 in patients with chronic inflammatory rheumatism, auto-immune or auto-inflammatory rare and non-rare diseases.

Inclusion Criteria:

• All patients, children and adults
• Patients with known chronic inflammatory rheumatism, auto-immune or auto-inflammatory rare and non-rare diseases with proven/suspected SARS-Cov-2 infection (COVID-19) (by biological data (serological or positive Cov-2 PCR) or CT scan images or clinical observations consistent with covid-19)

Exclusion Criteria:

• patients opposed to the use of their data
• patients under guardianship, protected persons

All patients with chronic inflammatory rheumatism, auto-immune or auto-inflammatory rare and non-rare diseases with proven SARS-Cov-2 infection (COVID-19) taken care in hospital or in private practice by rheumatologist, internist or pediatrician working in both hospital and private practice activities