Causes of a Herpes Outbreak
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By eHow Contributing Writer
There are two main types of herpes: herpes simplex 1, or oral herpes, which causes cold sores, and herpes simplex 2, or genital herpes, which is a sexually transmitted disease. Both forms are highly contagious. Oral herpes is very common, with about 90 percent of Americans contracting it at some point in their lives. Genital herpes is one of the most sexually transmitted diseases. You can prevent genital herpes outbreaks by exercising and eating well.