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).
Herpes simplex virus is common in the United States. There are two types of the virus, HSV-1 and HSV-2. HSV-1 is known as oral herpes, and HSV-2 is generally responsible for genital herpes.
Genital herpes is an STD caused by two types of viruses. The viruses are called herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2).
The herpes simplex virus, or herpes, is categorized into 2 types: herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2). HSV-1 is mainly transmitted by oral-to-oral contact to cause oral herpes (which can include symptoms known as “cold sores”), but can also cause genital herpes.
Herpes Simplex Virus Type 1. Herpes simplex virus type 1 is one of the two types of herpes simplex viruses; it may also be called HSV-1. This virus is more common than its counterpart and is the culprit for oral sores or cold sores. Herpes simplex virus type 1 may also cause genital herpes but most cases of genital herpes are caused by HSV-2.
Epidemiology of Herpes simplex virus 1 (HSV-1) Herpes simplex viruses are worldwide in distribution, equally between the sexes, and without seasonal variation. HSV-1 infection is more common than HSV-2 infection with 65% of persons in the United States having antibodies to HSV-1.