Multiple sclerosis, or MS, is not thought to be contagious. While you are more likely to develop the disease if you have family members who have it, being around someone with MS does not put you at risk of contracting the disease. Talk to your doctor about possible risk factors for the disease.
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Dr. Louis Rosner, Neurology, answeredMost likely, multiple sclerosis (MS) is not transmitted from human to human. If it were, the number of cases would have reached outrageously epidemic proportions. The low incidence of MS among married couples establishes that it is definitely not transmitted from adult to adult. But can it be transmitted from human to human during the vulnerable years? There is very strong evidence against this theory, but like many theories in MS research, it has not been absolutely ruled out. If MS is, indeed, caused by a virus, exposure to it occurs in one of the three ways just explored.