Is that what causes hand-foot-and mouth disease? If so, I was wondering the same thing. I had a mom at my shower last week whose son had just gotten over this and now I have sores on the roof of my mouth....But I too couldn't find anything about it really being harmful during pg. Everything I read pretty much said that it just went away on its own and never really did any damage to kids who get it....Sorry I can't help any more. I hope this is what you are talking about....if not, then just ignore me