Recent research suggests people with long Covid are more likely to have markers of autoimmune disease in their blood a year after infection.
Disease experts say it has become increasingly clear that an autoimmune response, in which antibodies attack the body’s own healthy cells and tissue, plays an important role in some long-Covid cases.published last week in the European Respiratory Journal. It found that people who had long-lasting Covid symptoms were more likely to have markers of autoimmune disease in their blood than people who'd recovered quickly from the coronavirus or had never gotten infected.
After a year, 41% of the Covid group had detectable autoantibodies in their blood, whereas most healthy people had none. Autoantibody levels were also relatively low in the group with unrelated respiratory infections. Dr. Manali Mukherjee, the study’s senior author and an assistant professor of medicine at McMaster University, said her team plans to follow up with the patients up to two years post-infection to see if their symptoms resolve or they develop diagnosable autoimmune diseases.Mukherjee has a personal interest in the research: She got Covid a year and a half ago and still gets short of breath when she sings, swims or climbs the stairs. Her symptoms also include headaches, fatigue and brain fog.
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