[indymike]

The "perfect cocktail" theory is the current thinking around EBV but, it was current thinking 20 years ago and fell out of favor. This is why dealing with MS has been so hard. We don't know what actually causes the condition.

[hirvi74]

Does Northwestern European descendants still have higher rates of MS? They have higher rates of my autoimmune disease fwiw.

[indymike]

MS is more common the further from the equator you are. That applies to Northwestern Europeans. This does not apply to descendants who move closer to the equator. In short, the link between ethnicity and MS is not well understood at all. The only genetic factor that seems to be well understood is that MS is more than 2x more common in women than men.