I have had BK for 8 months. The titer was very high at first, but has gradually gone down. There is not any medication for it, only cutting out some of the immunotherapy to allow your natural body defenses to come back and fight off the virus. You will also have to be on more prednisone. Prednisone has some uncomfortable side effects. BK virus can also come back after it has disappeared due to changes in your immune status.