Why does the CDV theory remain controversial for multiple sclerosis?

Because most surveys have failed to show that people with multiple sclerosis (MS) include more dog owners or people who have had greater exposure to dogs. Another criticism of the theory is that while MS has a preference for colder climates, canine distemper virus (CDV) occurs everywhere. (On the other hand, some argue, distemper peaks in cold, damp weather conditions, when dogs and people are more apt to be indoors and in close contact, and CDV is also more rapidly inactivated in warm temperatures.)As the controversy continues, both sides agree to err on the side of caution and make sure dogs are vaccinated against distemper.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.