noun
thrush fungus; Candida albicans
Medical term for the fungus that causes oral thrush (鵞口瘡). Usually written in katakana.
鵞口瘡はガコウソウキンという真菌が原因です。
Thrush is caused by a fungus called Candida albicans.
ガコウソウキンは口腔内に常在していることがあります。
Candida albicans can be a normal resident in the oral cavity.
From 鵞口瘡 (oral thrush) + 菌 (fungus/bacterium). The kanji are rarely used; the term is typically written in katakana as a medical loanword-like compound.