Trust me, everyone reading this more than likely has herpes simplex virus 1, which generally causes oral herpes, aka cold sores or fever blisters. As Dr. Doe said, most people have it and do not have symptoms. Most people get it when they are children from their parents through kissing or sharing food drink. If you get cold sores often their are drugs to help lesson breakouts. Ask your doctor about the drug Acyclovir, it is an antiviral that treats herpes simplex, oral or genital.