Cited by 330Fungal Infections and StudiesPlant Pathogens and Fungal DiseasesYeasts and Rust Fungi Studies

Emergence and pathogenicity of highly virulent Cryptococcus gattii genotypes in the northwest United States

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Byrnes, Edmond J., Li, Wenjun, Lewit, Yonathan, Ma, Hansong, Voelz, Kerstin, Ren, Ping, Carter, Dee A., Chaturvedi, Vishnu +3 more·2010·PLoS Pathogens

Abstract

Cryptococcus gattii causes life-threatening disease in otherwise healthy hosts and to a lesser extent in immunocompromised hosts. The highest incidence for this disease is on Vancouver Island, Canada, where an outbreak is expanding into neighboring regions including mainland British Columbia and the United States. This outbreak is caused predominantly by C. gattii molecular type VGII, specifically VGIIa/major. In addition, a novel genotype, VGIIc, has emerged in Oregon and is now a major source of illness in the region. Through molecular epidemiology and population analysis of MLST and VNTR markers, we show that the VGIIc group is clonal and hypothesize it arose recently. The VGIIa/IIc outbreak lineages are sexually fertile and studies support ongoing recombination in the global VGII population. This illustrates two hallmarks of emerging outbreaks: high clonality and the emergence of novel genotypes via recombination. In macrophage and murine infections, the novel VGIIc genotype and VGIIa/major isolates from the United States are highly virulent compared to similar non-outbreak VGIIa/major-related isolates. Combined MLST-VNTR analysis distinguishes clonal expansion of the VGIIa/major outbreak genotype from related but distinguishable less-virulent genotypes isolated from other geographic regions. Our evidence documents emerging hypervirulent genotypes in the United States that may expand further and provides insight into the possible molecular and geographic origins of the outbreak.

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  1. [21]Sorrell TC 2001 Cryptococcus neoformans variety gattii. Med Mycol 39 155 168 11346263
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Authors
Byrnes, E. J., Li, W., Lewit, Y., Ma, H., Voelz, K., Ren, P., Carter, D. A., Chaturvedi, V., Bildfell, R. J., May, R. C., & Heitman, J.
Affiliations
  • Duke Medical Center (US)
  • University of Birmingham (GB)
  • Wadsworth Center (US)
  • The University of Sydney (AU)
  • Oregon State University (US)
Corresponding author
Heitman, Joseph
Venue
PLoS Pathogens
Published
2010-04-22
Volume
6
Issue
4
Pages
e1000850
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W2065557130
Cited by
330
References
78
Citations by year
2026: 3 · 2025: 1 · 2024: 9 · 2023: 12 · 2022: 7 · 2021: 8 · 2020: 15 · 2019: 16 · 2018: 22 · 2017: 29 · 2016: 30 · 2015: 21 · 2014: 35 · 2013: 30 · 2012: 36
FWCI
28.16
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DukeSpace (Duke University) (submittedVersion, cc-by-nc-nd)
  • Figshare (submittedVersion, cc-by)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion, other-oa)
  • Apollo (University of Cambridge) (submittedVersion, cc-by)
  • Apollo (cc-by)
Funders
  • Broad Institute
  • National Institutes of Health (R01‐grant, AI39115)
  • Medical Research Council
  • National Institute of Allergy and Infectious Diseases (R37AI039115, R01 AI39115, R01AI039115)
Topics
  • Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Plant Pathogens and Fungal Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Yeasts and Rust Fungi Studies
Keywords
Cryptococcus gattii, cryptococcal meningitis, molecular epidemiology, multilocus sequence typing, VNTR markers, clonal expansion, recombination, emerging fungal pathogens, macrophage infection, Northwest United States
MeSH terms
Animals, Cryptococcosis, Disease Outbreaks, Female, Genotype, Humans, Mitochondria, Northwestern United States, Cluster Analysis, Polymerase Chain Reaction, Molecular Epidemiology, Mice, Cryptococcus gattii

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