Nice new paper that may be of interest: PLOS Pathogens: From Dandruff to Deep-Sea Vents: Malassezia-like Fungi Are Ecologically Hyper-diverse by Anthony Amend.
Malassezia are commonly found in many studies of human skin and when they have been found in other places sometimes it is thought that they are vagrants having come from the skin of humans or other animals. And they are certainly found relatively commonly in buildings and other human occupied locales. For example see:
- The Impact of Sampler Selection on Characterizing the Indoor Microbiome
- Recent Advances in the Microbiology of the Built Environment
- The Diversity and Distribution of Fungi on Residential Surfaces
- Microbial Communities Associated with House Dust
and more. Given the widespread “natural” distribution of this group of organisms it seems reasonable that one should no longer assume that the Malassezia one finds in a building has to be coming from skin.