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International Journal of Microbiology
Volume 2016, Article ID 4080725, 5 pages
Research Article

Eucalyptus Tree: A Potential Source of Cryptococcus neoformans in Egyptian Environment

1Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
2Department of Zoonoses, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt

Received 16 June 2015; Revised 22 September 2015; Accepted 27 September 2015

Academic Editor: Joseph Falkinham

Copyright © 2016 Mahmoud Elhariri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In Egypt, the River Red Gum (Eucalyptus camaldulensis) is a well-known tree and is highly appreciated by the rural and urban dwellers. The role of Eucalyptus trees in the ecology of Cryptococcus neoformans is documented worldwide. The aim of this survey was to show the prevalence of C. neoformans during the flowering season of E. camaldulensis at the Delta region in Egypt. Three hundred and eleven samples out of two hundred Eucalyptus trees, including leaves, flowers, and woody trunks, were collected from four governorates in the Delta region. Thirteen isolates of C. neoformans were recovered from Eucalyptus tree samples (4.2%). Molecular identification of C. neoformans was done by capsular gene specific primer CAP64 and serotype identification was done depending on LAC1 gene. This study represents an update on the ecology of C. neoformans associated with Eucalyptus tree in Egyptian environment.