all types of yeast strains form biofilms and can co-exist in each others biofilms. in fact sometimes its the combination of yeast strains that cause pathogenic conditions in their host causing a synergistic versus additive impact.
diflucan and such can't get to them when they have this protection i believe so one should take a biofilm buster when doing antifungals.
ran across this article on microbes/yeast present in those with chron's disease. interesting read esp this part about
biofilms.
"Since E. coli and S. marcescens have been shown to interact with candida tropicalis (11, 12), we investigated their ability to form biofilms using our in vitro model (13). Confocal analyses showed that all the tested organisms were able to form biofilms, and the thickness of the triple-species biofilms was significantly greater (P < 0.0001) than that of biofilms formed by single and double species (Fig. 4). Scanning electron microscopy (SEM) analyses showed that while biofilms formed by C. tropicalis alone comprised yeast forms, those formed by C. tropicalis combined with either E. coli or S. marcescens were enriched in fungal hyphae, a form of growth associated with pathogenic conditions (Fig. 5A to C). Closer examination of these biofilms showed that the two bacteria existed in intimate contact with the fungus but differed in their specific interactions. In this regard, unlike S. marcescens, E. coli cells seem to be fused to the fungal cells (Fig. 5D and E)."
mbio.asm.org/content/7/5/e01250-16.full?sid=54e645fa-b735-4cd6-a02d-1f00a7de9344