Inflammatory rheumatism and Covid-19

Studies suggest a higher incidence of autoimmune inflammatory rheumatic diseases in patients infected with SARS-CoV2. In this binational, longitudinal, matched cohort study, researchers included data from 10,027,506 Korean and 12,218,680 Japanese patients aged 20 years or older, including those with Covid-19 between January 1, 2020 and December 31, 2021, matched with patients with influenza infection and uninfected control patients. Beyond the first 30 days following infection, Covid-19 patients had an increased risk of developing autoimmune inflammatory rheumatism compared with uninfected patients or patients affected by influenza.