Too early to tell anything from this study and the article doesn't discuss any details.

But a lower incidence of autoimmune diseases have been linked to childhood infections. As in, the more pathogens you're exposed to earlier in life the more your immune system develops to be a healthy one. No sources off hand, but it makes sense if you consider that an autoimmune disease is a problem in the immune system.

I am guessing this would apply to all kinds of abnormal inflammatory responses in the body.