I have very big IgG against herpes viruses № 4 (Epstein-Barr), №5 (Cytomegalovirus), №6 and number 7 (about 20 times more than norm). 1. If all people who have too much IgG against herpes viruses are tired (have CFS) - this would me a good argument that herpes viruses are the reason. 2. If there are people, who have big IgG against herpes viruses and nevertheless are not tired - this would be a good argument, that herpes viruses are not (the only, the main) reason for CFS. Is there any studies, that answer this question ?