How did you find out about the virus in your brain tissues? Is this something that a doctor told you, or was it an intuitive/energetic worker, or chiropractor?
As far as cleansing goes, I love essiac tea.
Also, homeopathy can be used 2 separate ways - 'general' remedies can be used, and this is the most frequent way that homeopathy is used. Homeopathy uses 'like' to treat 'like.' If the elm tree, eg., is known to create a certain symptom in the body, a person with the symptom that the elm can create, would take elm to balance the symptom out. This is the most typical way that it is used. But there is a second way that homeopathy is used - nosodes. Someone with lyme disease would take a nosode of lyme - basically the essence of lyme, which would include an extremely minute amount of the lyme bacteria, (not alive), in a base of alchohol.... if you know what the virus is, certain homeopaths will work to create a nosode for you.
I've used nosodes succesfully to get rid myself of mercury, palladium (another dental metal), and lyme disease.