Canadian study builds on link between long COVID-19 and autoimmune diseases like lupus – CTV

Sept. 22, 2022

Some long COVID patients suffering symptoms including fatigue and shortness of breath are showing signs of autoimmune diseases like rheumatoid arthritis and lupus, suggests a Canadian study that builds on similar findings elsewhere.

Manali Mukherjee, who led the study and is a respiratory researcher at McMaster University in Hamilton, said two specific abnormal antibodies, or autoantibodies, which attack healthy tissues and are known to cause autoimmune disease, persisted in about 30 per cent of patients a year after they became infected.

The research was based on blood samples from patients who were diagnosed with COVID-19 between August 2020 and September 2021 and received care at two hospitals in Vancouver and another in Hamilton.

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