Rates of new-onset autoimmune inflammatory rheumatic disease (AIRD) such as rheumatoid arthritis and systemic lupus erythematosus were significantly increased following bouts of COVID-19 in South Korea and Japan, researchers found.
With data from large repositories in the two countries, AIRD rates were 25% higher in South Korea (95% CI 18-31) and 79% greater in Japan (95% CI 77-82) among COVID-19 patients versus uninfected controls from the general population, according to Dong Keon Yon, MD, PhD, of Kyung Hee University in Seoul, and colleagues.
Absolute rates after COVID were 1.15% in Korea and 3.87% in Japan.
However, vaccination against SARS-CoV-2 reduced the likelihood of developing AIRD following breakthrough infection, except when those infections became severe, the researchers reported in Annals of Internal Medicine. In fact, severity of COVID-19 increased AIRD risks across the board.
Yon and colleagues stopped short of calling AIRD a form of “long COVID,” in which fatigue, malaise, and respiratory symptoms typically predominate. What they did conclude was that AIRD appears to qualify as a long-term COVID-19 complication: AIRD development rates remained strongly elevated in both countries up to a year after infection, and beyond that in the Japanese data (HR 1.57 vs general population, 95% CI 1.50-1.64) though not in Korea.
Fair Use Notice
UNMC Global Center for Health Security staff curate publicly available news and information for educational and informational purposes. Brief excerpts of published articles may be displayed under principles of Fair Use, with credit and links provided to the source publications. All copyrights remain the property of their respective owners.