Possible pathways of C. auris emergence and the hypothetical role of interspecies transmission HospitalLaFe IISLaFe infection fungi disease health
By Tarun Sai LomteMar 27 2023Reviewed by Lily Ramsey, LLM In a recent study published in the journal Clinical Microbiology and Infection, researchers in Spain, summarized the current understanding of the emergence and ecologic niches of Candida auris.
In the present study, the authors discussed the likely pathways of the emergence of C. auris and the role of inter-species transmission. In doing so, the study postulates that climate change has played a major role in high thermotolerant C. auris emergence. Thus, hypothesizing that climate change induced an environmental ancestor to become pathogenic through thermal adaptation.
One study showed that C. auris could grow at elevated temperatures than its close phylogenetic relatives. In addition, the remarkable halotolerance exhibited by this fungus suggested that it could have previously existed as an environmental species in wetlands/marshes. It was also significantly different from clinical isolates suggesting a higher similarity to its wild ancestors from marine ecosystems.
DNA metabarcoding identified partial matches in non-human sources, such as activated sludge, air dust, the ear canal of a dog with otitis, peanut fields, and the skin of newts. This provided evidence of the ubiquitous presence of the fungus in anthropogenic and natural environments.
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