Concerning the link between EBV infection and MS, how certain are we of that? Is there an EBV vaccine?
I think you mentioned that it was a necessary causal factor for multiple sclerosis. I would assume it's not so easy as, okay, we've got a cure and we vaccinate everyone for EBV.
Is there a vaccine, or how close are we to a vaccine, and is there that kind of causal certainty that we can take that approach?