Thursday, January 13, 2022

Stronger evidence linking virus to multiple sclerosis

 

https://apnews.com/article/coronavirus-pandemic-science-health-multiple-sclerosis-b325dceb5612e4ec7f22c8f25901e5eb

 

 There’s more evidence that one of the world’s most common viruses may set some people on the path to developing multiple sclerosis.

Multiple sclerosis is a potentially disabling disease that occurs when immune system cells mistakenly attack the protective coating on nerve fibers, gradually eroding them.

The Epstein-Barr virus has long been suspected of playing a role in development of MS. It’s a connection that’s hard to prove because just about everybody gets infected with Epstein-Barr, usually as kids or young adults -- but only a tiny fraction develop MS.

Thursday, Harvard researchers reported one of the largest studies yet to back the Epstein-Barr theory.

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The virus appears to be “the initial trigger,” Drs. William H. Robinson and Lawrence Steinman of Stanford University wrote in an editorial accompanying Thursday’s study. But they cautioned, “additional fuses must be ignited,” such as genes that may make people more vulnerable.

Epstein-Barr is best known for causing “mono,” or infectious mononucleosis, in teens and young adults but often occurs with no symptoms. A virus that remains inactive in the body after initial infection, it also has been linked to later development of some autoimmune diseases and rare cancers.

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Attempts are underway to develop Epstein-Barr vaccines including a small study just started by Moderna Inc., best known for its COVID-19 vaccine.


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