I have been removing fungus for a long while for folks and once I remove it
they haven't brought them back for further cleaning. Than again, I am out here in Southern California, so fungus isn't a big problem and once it's cleaned it is not really subjected to humidity, ect. that causes the fungus.
So I can't tell you want happens, if it's the same fungus or new fungus that comes
on from further exposure to moisture.
Most of the fungus cases I get are from items that were stored improperly for long periods of time or were purchased with this problem.
So that is my experiance with fungus, I am positive that those repair folks living in mid & east coast would have more knowlege than I in this area.