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Identification of zoonotic Giardia genotypes in marsupials in Australia

Thompson, J., Yang, R.ORCID: 0000-0003-2563-2015, Power, M., Hufschmid, J., Beveridge, I., Reid, S., Ng, J., Armson, A. and Ryan, U.ORCID: 0000-0003-2710-9324 (2008) Identification of zoonotic Giardia genotypes in marsupials in Australia. Experimental Parasitology, 120 (1). pp. 88-93.

Link to Published Version: http://dx.doi.org/10.1016/j.exppara.2008.05.002
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Abstract

A total of 421 fecal samples from a variety of captive and wild marsupial hosts in Western Australia, Victoria and South Australia were screened for the presence of Giardia species/genotypes using PCR and sequence analysis of a fragment of the 18S rRNA gene. Giardia spp. were identified in 13.4% (28/209) of samples from captive marsupials and 13.7% (29/212) of samples from wild marsupials. Sequence analysis at the 18S locus identified the zoonotic Giardia duodenalis Genotypes A and B in both captive and wild marsupials. Eight isolates were typed as genotype B3 and B4 at the gdh locus, although 7/8 were typed as genotype A at the 18S rRNA locus. The possible reasons for this discordance are discussed. This is the first report of genotype B and only the second report of genotype A in marsupials. As some of the genotype B isolates were identical to human-derived Giardia gdh sequences, these results suggest that marsupials in catchments may pose a public health risk and therefore warrant further investigation.

Item Type: Journal Article
Murdoch Affiliation(s): School of Veterinary and Biomedical Sciences
School of Nursing & Midwifery
Publisher: Academic Press
Copyright: © 2008 Elsevier Inc.
URI: http://researchrepository.murdoch.edu.au/id/eprint/3415
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