The discussion is not when a Mohel (or any person for that matter)has an active case of HSV 1 (Cold sores. All Mohelim know that they should not perform MbP then. And they don’t.
However, there are those who insist that it can shed even when not active, which for some reason has not been proven. Which is strange, because 80% of people have inactive HSV1, so it should be simple to check and prove. The fact that it hasn’t says a lot.
In addition, no is sure that a parent who has active HSV 1 is careful enough to make sure that they do not spread it to a new born child.
Disregard Goofus’ comment about HSV 2. that is not the issue with Mohelim.
Edited. Such comments will not be tolerated.