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Applied and Environmental Microbiology, April 1999, p. 1455-1458, Vol. 65, No. 4
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Identification of Cryptosporidium felis in a Cow by Morphologic and Molecular Methods

Fernando J. Bornay-Llinares,1,2 Alexandre J. da Silva,1 Iaci N. S. Moura,1 Przemyslaw Myjak,3 Halina Pietkiewicz,3 Wieslawa Kruminis-Lozowska,3 Thaddeus K. Graczyk,4 and Norman J. Pieniazek1,*

Division of Parasitic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Public Health Service, U.S. Department of Health and Human Services, Atlanta, Georgia1; División de Microbiología y Parasitología y Centro de Bioingeniería, Universidad Miguel Hernández, Alicante, Spain2; Department of Tropical Parasitology, Institute of Maritime and Tropical Medicine, Gdynia, Poland3; and Department of Environmental Health Sciences, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland4

Received 17 November 1998/Accepted 7 January 1999

Apicomplexan Cryptosporidium parasites infect a wide range of vertebrate hosts. While some species are limited to a single host group, such as Cryptosporidium baileyi, which infects chickens, other species of this genus, such as C. parvum, infect a wide range of mammalian species from mice to humans. During an investigation of Cryptosporidium infection in cattle on a farm in northern Poland, we identified an infection caused by C. felis, in addition to known infections with C. muris and C. parvum. This new infection was identified based on the size of the oocysts (mean size, 4.3 ± 0.4 µm; range, 3.5 to 5.0 µm), as well as by analysis of the molecular sequence of the variable region of the small-subunit rRNA. This finding demonstrates the complex host specificity and circulation in the environment of Cryptosporidium species.

* Corresponding author. Mailing address: Mail Stop F-13, Biology and Diagnostics Branch, Division of Parasitic Diseases, Centers for Disease Control and Prevention, 4770 Buford Hwy. NE, Atlanta, GA 30341-3724. Phone: (770) 488-4073. Fax: (770) 488-4108. E-mail: nxp3{at}cdc.gov.

Applied and Environmental Microbiology, April 1999, p. 1455-1458, Vol. 65, No. 4
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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