Herpes simplex virus, abbreviated as HSV, is a member of the Herpesvirus family, and a species that infects humans only. HSV has two major serotypes: HSV-1 and HSV-2. HSV-1 is mainly transmitted by oral-to-oral contact, causing oral herpes (including symptoms known as cold sores), but it can also lead to genital herpes. HSV-2 is a sexually transmitted infection that causes genital...