Shedding is confined to the dermatome served by the ganglia that has the infection. Ok, so there are some medical terms being thrown out there that may need explanation. Dermatome is an area of skin and ganglia is a nerve bundle that is the "Neurological Central Office" for a particular part of the body. In the case of a genital herpes infection, that ganglia is the sacral ganglia located near the base of the spine.
So, if you are genitally infected, the area of possible shedding is what we generally consider as the "private" area, front and rear.
If your question is whether infections that have taken place in areas other then genitally shed less, I am not aware of any studies, but perhaps some of our more medically oriented folks can comment.
I think, too, that it might depend on whether the infection elsewhere is type 1 or type 2. As a rule of thumb, infections outside the genital area with type 2, seem to be less troublesome, but I know of no hard data on that. In my case, I have a type 2 infection on my left hand as confirmed by a type specific culture. In over 20 years of having it, I have had only one recurrence.
I hope this helps.
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