[theold]

Evidence is also mounting that an abnormal immune response is at play, leading to heightened inflammation that may be responsible for some symptoms. 

The root cause of that overactive immune response remains mysterious, with researchers examining whether viral particles left over from the main infection continue to trigger the immune system. 

Maley said that there may also be a genetic component, with some people predisposed to this type of immune response.


https://news.harvard.edu/gazette/story/2...vid-cases/