Can someone infected with herpes continue to have sex without giving it to their partner? Do cold sores, which are almost always caused by herpes simplex virus type 1 (HSV-1), protect against genital herpes caused by herpes simplex virus type 2? Can someone be infected with both types of herpes viruses?. Discordant couples, for example, have not transmitted the virus between them and are encouraged to use condoms and take other preventive measures. Genital herpes is a viral infection that can cause painful genital sores and causes recurrent outbreaks. The herpes virus is spread by direct person-to-person contact.