herpes simplex viruses -- more commonly known as herpes -- are categorized into two types: herpes type 1 (hsv-1 or oral herpes) and herpes type 2 (hsv-2 or genital herpes). most commonly herpes type 1 causes sores around the mouth and lips (sometimes called fever blisters or cold sores). hsv-1 can cause genital herpes but most cases of genital herpes are caused by herpes type 2. in hsv-2 the infected person may have sores around the genitals or rectum. although hsv-2 sores may occur in other locations these sores usually are found below the waist.
what are the types of herpes simplex viruses?