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Background and Objective: People with rheumatic diseases are particularly concerned with the coronavirus disease 2019 (COVID-19) pandemic. Our work aimed to study the impact of pre-existing autoimmune rheumatic disease (AIRD) and its immunosuppressive drugs on COVID-19 severity and outcome., Patients and Methods: This is a multicenter case-control study performed between September 2020 and February 2021 on 130 adults with COVID-19, including 66 patients with AIRD and 64 without AIRD, who served as a control group., Results: Regarding COVID-19 clinical manifestations; diarrhea, fatigue, and headache were found with significantly higher frequency in the AIRD group while a higher frequency of cough was found in the control group. Comparing COVID-19 complications, only septic shock was significantly higher in the AIRD group (P = 0.013). Both groups were treated with similar COVID-19 drugs except for tocilizumab and anticoagulants, which were statistically significantly more frequently used in the control group (P < 0.001 for both). No statistically significant difference was found between the groups in the outcome or severity of COVID-19. There was no impact of previous immunosuppressive drugs before COVID-19 on the severity of the disease except for a longer duration of recovery in patients on steroids (P < 0.001). Patients with hypertension had severe COVID-19 compared with those without (odds ratio 2.8, 95% confidence interval 1.2-6.9; P = 0.020)., Conclusion: AIRD may not affect COVID-19 severity and outcome. Similarly, immunosuppressive medications had no effect; except that patients on systemic steroids had longer duration for recovery. Comorbid conditions, such as hypertension, may be associated with more severe COVID-19 disease course., (© 2023 Asia Pacific League of Associations for Rheumatology and John Wiley & Sons Australia, Ltd.)