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The most common herpes viruses are herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2). Usually HSV-1 causes cold sores or fever blisters on or around the lips, and HSV-2 affects areas below the waist, causing genital herpes. But both HSV-1 and HSV-2 viruses can cause herpes outbreaks in either area. Other common herpes infections include chicken pox and shingles, which are caused by the herpes zoster virus.
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