Whatever's happening with your group doesn't seem to be getting any worse. As for the other, it's difficult to tell. Generally we've been avoiding any circumstances where there may be cross-contamination because if it starts spreading unchecked, that's going to be difficult, if not impossible to stop, and we want to avoid things like having to set the original vector on fire.

[because if the vector is a person, they will likely not approve of being set on fire.]

Fire is all you've found that kills it, correct?