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Herpes virus type 3 is also known as varicella-zoster virus which causes chicken pox. This virus can also lead to a recurrent infection called herpes zoster or shingles. It occurs when the virus becomes reactivated after causing chicken pox and infects the skin. So if you have had chicken pox as a child, you may get shingles afterwards. Shingles and chicken pox cause blisters anywhere on the body. They are contagious and can be spread by direct contact with fluid from the blisters.