It is most often: Herpes simplex virus 1. But herpes simplex virus 2 is a possibility.
Answered 10/4/2016
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Herpes: Cold sores are always considered to be herpes. 75% of americans have been exposed to and have herpes type one. At least 95% of the cold sores are caused by this type of herpes. But, 5% of oral herpes is from herpes type two, which used to be called 'genital herpes'. It is always best to know your herpes status through the blood tests for herpes.
Answered 1/31/2014
4.5k views
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