Because everyday is Caturday...
The thing is these viruses are not harmful to everyone, just to a few million of us unlucky ducks. Quack!The problem is that there is no medical treatment to eliminate chronic viruses so while we can identify the culprits we don't have any treatments to eliminate them and we are stuck managing symptoms and coping with the disease. Why are no vaccinations for EBV, HHV6, etc despite the fact that we know they are harmful?
There is research into possible treatments, but I doubt we will have a treatment anytime soon. It is too late to help a lot of us, we are already damaged by these viruses.