Ganciclovir
Ganciclovir has also been used with some success in treating "Human herpesvirus 6" infections.
Human herpesvirus 6
Research suggests that viral infections can be tied even closer to MS. EBV antibodies in healthy individuals remain constant, whereas antibody levels in individuals who later develop MS begin to increase and plateau between 20 and 30 years of age, regardless of age of onset.