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Asymptomatic Enterocytozoon bieneusi microsporidiosis in captive mammals

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Abstract

Human microsporidiosis, a serious disease of immunocompetent and immunosuppressed people, can be due to zoonotic transmission of microsporidian spores. A survey utilizing chromotrope 2R stain and fluorescent in situ hybridization techniques for testing feces from 193 captive mammals demonstrated that 3 animals (1.6%) shed Encephalitozoon bieneusi spores. These include two critically endangered species (i.e., black lemurs, Eulemur macaco flavifrons; and Visayan warty pig, Sus cebifrons negrinus) and a threatened species (mongoose lemur, Eulemur mongoz). The concentration of spores varied from 2.7 × 105 to 5.7 × 105/g of feces, and all infections were asymptomatic. The study demonstrates that E. bieneusi spores can originate from captive animals, which is of particular epidemiologic importance because the close containment of zoological gardens can facilitate pathogen spread to other animals and also to people such as zoo personnel and visitors.

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Acknowledgments

We thank Mrs. Ewa Trzesowska, M.Sc., the Poznan Zoological Garden, Poland, for facilitating fecal sample collection. This study was supported by NATO Collaborative Linkage Grant, Brussels, Belgium (grant no. 979765), Johns Hopkins Center in Urban Environmental Health (grant no. P30 ES03819), Alternatives Research & Development Foundation, NOAA Chesapeake Bay Office (grant no. NA04NMF4570426), Procter & Gamble Foundation, The Center for a Livable Future, and the Poznan University of Medical Sciences, Poznan, Poland (grant no. 501-01-03496).

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Correspondence to Thaddeus K. Graczyk.

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Slodkowicz-Kowalska, A., Graczyk, T.K., Tamang, L. et al. Asymptomatic Enterocytozoon bieneusi microsporidiosis in captive mammals. Parasitol Res 100, 505–509 (2007). https://doi.org/10.1007/s00436-006-0303-z

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  • DOI: https://doi.org/10.1007/s00436-006-0303-z

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