Natural habitat of Cryptococcus neoformans var. gattii

Author:

Ellis D H1,Pfeiffer T J1

Affiliation:

1. Department of Microbiology, Adelaide Children's Hospital, Australia.

Abstract

Environmental isolations have established that Cryptococcus neoformans var. gattii appears to have a specific ecological association with Eucalyptus camaldulensis. So far, we have isolated C. neoformans var. gattii on 35 separate occasions, all from samples associated with E. camaldulensis. The global distribution of E. camaldulensis appears to correspond to the epidemiologic distribution of cryptococcosis caused by C. neoformans var. gattii. No other environmental source for the fungus has yet been detected, and no other eucalypt has the distribution pattern corresponding to reported cases caused by this fungus. These findings may provided an explanation for the high incidence of infections caused by C. neoformans var. gattii in Australian aborigines living in the Northern Territory and for its low worldwide incidence in acquired immunodeficiency syndrome patients.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference12 articles.

1. Barnett J. A. R. W. Payne and D. Yarrow. 1983. Yeasts: characteristics and identification p. 283-284. Cambridge University Press London.

2. The prevalence of cryptococcosis in the koala (Phascolarctos cinereus);Bollinger A.;Med. J. Aust.,1962

3. Chippendale G. M. 1988. Eucalyptus Angophora (Myrtaceae). Flora of Australia vol. 19. Bureau of Flora and Fauna Australian Government Publishing Service Canberra Australia.

4. Cryptococcus neoformans var. gattii in Australia;Ellis D. H.;J. Clin. Microbiol.,1987

5. Epidemiologic differences between the two varieties of Cryptococcus neoformans;Kwon-Chung K. J.;Am. J. Epidemiol.,1984

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