HERPESVIRUS

a group of viruses that includes herpes simplex virus type 1 (HSV-1 or HHV-1) and 2 (HSV-2 or HHV-2), varicella-zoster virus (VZV or HHV-3), Epstein-Barr virus (EBV or HHV-4), cytomegalovirus (CMV or HHV-5), human herpesvirus types 6 and 7 (HHV-6, HHV-7) and Kaposi's sarcoma-associated herpesvirus (KSHV or HHV-8). Herpesviruses may act as opportunistic pathogens and/or cofactors in HIV pathogenesis.