There are different strains of HSV1 but our immune systems appear equally as effective.
You are talking about an issue that has no observable probabilities or risk factors given the rarity.
Fleetwood,
I remember one of your previous responses to this questions was that it was nearly impossible, because if a ganglion is infected in one area, your body produces immunity internally which makes infection of other ganglion nearly impossible. Some of the doctors on this forum have given the immunity explanation as well....So I guess I am wondering would one have less immunity to another person's HSV-1 as compared to your own HSV-1? Thoughts? Thanks for your response!
I think you do need to be careful about stories about self innoculation. There aren't really any documented cases of it happening. It seems theoretically possible that it happens, but I am yet to see a proven story, that is, one that doesn't have a rational explanation of previous symptoms thought to be cold sores actually weren't and no blood test or swab to prove that it was.
Even if there is a small chance of it happening, then it makes sense that you are more likely to get it from another person. This is because the shedding area actually comes into contact with the skin. Self innoculation just about always requires a movement through fingers, saliva etc. and skin to skin is harder to achieve.