BBC News - TB vaccine 'could help prevent MS'

An anti-tuberculosis vaccine could prevent multiple sclerosis, early research suggests. A small-scale study by researchers at the Sapienza University of Rome has raised hopes that the disease can be warded off when early symptoms appear.

More research is needed before the BCG vaccine can be trialled on MS patients.

see also:- 

Mycobacterium avium subsp. paratuberculosis and multiple sclerosis in Sardinian patients: epidemiology and clinical features.