Clinical Yeast Identification Systems and Pathogen Ecology
Summary
The accurate identification of yeasts in clinical specimens is vital for guiding effective antifungal therapy and for understanding the environmental and host factors that drive opportunistic fungal disease. Advances in phenotypic culture media, automated biochemical platforms and molecular tools have progressively streamlined species-level assignment, while matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF MS) has revolutionised rapid laboratory diagnosis. Concurrently, genome-based methods, including average nucleotide identity, have refined taxonomic boundaries and uncovered hybridisation events that challenge conventional classification. At the same time, pathogen ecology studies explore the reservoirs, transmission routes and community interactions that govern the emergence and spread of Candida and other clinically relevant yeasts. This ecological perspective covers hospital-associated niches, environmental sources and host microbiome dynamics, revealing how anthropogenic pressures, antimicrobial use and ecological disturbances shape fungal population structures and resistance profiles. Integrating identification systems with pathogen ecology not only enhances outbreak detection and surveillance but also underpins precision medicine approaches that consider both the pathogen’s genetic profile and its ecological context.
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Clinical Yeast Identification Systems and Pathogen Ecology publication trend
The graph below shows the total number of articles in clinical yeast identification systems and pathogen ecology across all publications each year (not limited to Nature Index journals).
Technical terms
Average Nucleotide Identity (ANI): A genome-based metric comparing shared nucleotide sequences to delineate species boundaries.
MALDI-TOF MS: A mass spectrometry technique identifying microorganisms by their unique protein spectral fingerprints.
Candidemia: The presence of Candida species in the bloodstream, a serious invasive fungal infection.
Non-albicans Candida: Candida species other than C. albicans, often associated with antifungal resistance and distinct clinical outcomes.
Pathogen ecology: The study of environmental and host factors influencing the distribution, transmission and evolution of infectious agents.
References
- Evaluating the Genome-Based Average Nucleotide Identity Calculation for Identification of Twelve Yeast Species. Journal of Fungi (2024).
- The emergence of non-albicans candidemia and evaluation of HiChrome Candida differential agar and VITEK2 YST® platform for differentiation of Candida bloodstream isolates in teaching hospital Kandy, Sri Lanka. BMC Microbiology (2019).
- In house method for rapid identification of fungi from fungus-positive bottles by MALDI-TOF mass spectrometry in patients with bloodstream infection. Clinical Microbiology and Antimicrobial Chemotherapy (2022).
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