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Applied and Environmental Microbiology, July 2001, p. 3309-3313, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3309-3313.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Decrease in Cryptosporidium parvum Oocyst Infectivity In Vitro by Using the Membrane Filter Dissolution Method for Recovering Oocysts from Water Samples

Ramon A. Carreno,dagger Nicholas J. Pokorny, Susan C. Weir, Hung Lee,* and Jack T. Trevors*

Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1

Received 19 October 2000/Accepted 15 April 2001

Exposure of Cryptosporidium parvum oocysts to solutions used for cellulose acetate membrane (CAM) dissolution filtration reduced their infectivity in HCT-8 cells. Ethanol (95% [vol/vol] and 70% [vol/vol]) alone and short exposure times to acetone decreased infectivity. These findings contrast with similar experiments using excystation assays and infectivity in mice.

* Corresponding author. Mailing address: Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada. Phone: (519) 824-4120, ext. 3828. Fax: (519) 837-0442. E-mail for Hung Lee: hlee{at}uoguelph.ca. E-mail for Jack T. Trevors: jtrevors{at}uoguelph.ca.

dagger Present address: Department of Nematology, University of California---Davis, Davis, CA 95616-8668.

Applied and Environmental Microbiology, July 2001, p. 3309-3313, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3309-3313.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • GRACZYK, T. K., GRIMES, B. H., KNIGHT, R., DA SILVA, A. J., PIENIAZEK, N. J., VEAL, D. A. (2003). DETECTION OF CRYPTOSPORIDIUM PARVUM AND GIARDIA LAMBLIA CARRIED BY SYNANTHROPIC FLIES BY COMBINED FLUORESCENT IN SITU HYBRIDIZATION AND A MONOCLONAL ANTIBODY. Am J Trop Med Hyg 68: 228-232 [Abstract] [Full Text]  
  • Weir, S. C., Pokorny, N. J., Carreno, R. A., Trevors, J. T., Lee, H. (2002). Efficacy of Common Laboratory Disinfectants on the Infectivity of Cryptosporidium parvum Oocysts in Cell Culture. Appl. Environ. Microbiol. 68: 2576-2579 [Abstract] [Full Text]  


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