I think that it is bogus information when people and some sites say to avoid eating fungi when you have a yeast or fungi infection. I have read that it is okay therefore I would say that it is only heresay whether it is wrong to take it with any form of yeast/fungi infection.

I do not like fungi, vile stuff IMO but I have been consuming Cordyceps mushroom for health reasons. I do not have a yeast or fungi infection that I know of.

I know a Naturopath who specializes in treating complex chronic diseases and parasites. She is treating a person for mold/fungal illness and parasites and she indicates that these mushrooms are very effective in treating these conditions.
Helps the immune system to kick-in.