Two of the most important sentences from the Agut article on HHV-6
"The dysfunction of HHV-6-induced immune responses leading to autoimmune processes would involve not only specific T cell responses but also NK cell-mediated activation and killing (148). All these phenomena would converge to promote release of self antigens and polyclonal activation."
Laboratory and Clinical Aspects of Human Herpesvirus 6 Infections
Henri Agut Pascale Bonnafous Agnès Gautheret-Dejean
Clin Microbiol Rev. 2015 Apr;28(2):313-35. doi: 10.1128/CMR.00122-14.
http://cmr.asm.org/content/28/2/313.full.pdf+html?ijkey=v5.FkAKXOuEoU&keytype=ref&siteid=asmjournals
Laboratory and Clinical Aspects of Human Herpesvirus 6 Infections
Henri Agut Pascale Bonnafous Agnès Gautheret-Dejean
Clin Microbiol Rev. 2015 Apr;28(2):313-35. doi: 10.1128/CMR.00122-14.
http://cmr.asm.org/content/28/2/313.full.pdf+html?ijkey=v5.FkAKXOuEoU&keytype=ref&siteid=asmjournals