<Li> Herpes simplex virus 1 (HSV - 1) </Li> <Li> Herpes simplex virus 2 (HSV - 2) </Li> <P> Herpes simplex virus 1 and 2 (HSV - 1 and HSV - 2), also known as human herpesvirus 1 and 2 (HHV - 1 and HHV - 2), are two members of the herpesvirus family, Herpesviridae, that infect humans . Both HSV - 1 (which produces most cold sores) and HSV - 2 (which produces most genital herpes) are ubiquitous and contagious . They can be spread when an infected person is producing and shedding the virus . </P> <P> In simple terms, herpes simplex 1 is most commonly known as a "cold sore", while herpes simplex 2 is the one known by the public as "herpes", or "genital herpes". According to the World Health Organization 67% of the world population under the age of 50 have HSV - 1 . </P>

What type of herpes simplex virus usually produces genital infections