Exotic gut bacteria implicated in MS transmit disease in a mouse model.

https://www.earth.com/news/scientists-think-they-found-two-key-bacteria-that-cause-multiple-sclerosis/

“In animals that received bacteria from the sibling with multiple sclerosis, paralysis appeared within twelve weeks. Mice given microbes from the healthy twin stayed mobile the entire study.”

I did not expect this. More to come I am sure.