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Genotypes of Cryptosporidium Infecting Fur-Bearing Mammals Differ from Those Infecting Humans

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Abstract:To evaluate the public health significance of wildlife Cryptosporidium spp., five species of small wild mammals (beavers, muskrats, otters, raccoons, and foxes) living in Chesapeake Bay watersheds were examined in this study for the presence of Cryptosporidium spp., using a small subunit (SSU) rRNA gene-based PCR-restriction fragment length polymorphism technique (PCR-RFLP). A total of 471 fecal samples were collected, and 36 samples from four animal species (fox, raccoon, muskrat and beaver) were positive for five distinct Cryptosporidium spp.: C. canis dog genotype (1), C. canis fox genotype (4), Cryptosporidium muskrat genotype I (24), Cryptosporidium muskrat genotype II (6), and Cryptosporidium skunk genotype (2). Most animals had only one type of Cryptosporidium sp., with one muskrat having two types of Cryptosporidium (muskrat genotype I and II). Results of the study indicated that wildlife in watersheds carried host-adapted Cryptosporidium spp., which have no significant public health importance.
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Citation:Zhou, L., R. Fayer, J. Trout, F. W. Schaefer III, and L. Xiao. Genotypes of Cryptosporidium Infecting Fur-Bearing Mammals Differ from Those Infecting Humans. APPLIED AND ENVIRONMENTAL MICROBIOLOGY 70(12):7574-7577, (2004).
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Contact: Mary P. O'Bryant - (919)-541-4871 or obriant.mary@epa.gov
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Division: Microbiological & Chemical Exposure Assessment Division
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Branch: Biohazard Assessment Research Branch
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Product Type: Journal
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Published: 12/01/2004
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Bullet Item Genotypes of Cryptosporidium Infecting Fur-Bearing Mammals Differ from Those Infecting Humans
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