Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/64669
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Type: Journal article
Title: Giardiasis and Cryptosporidiosis in ruminants
Author: O'Handley, R.
Olson, M.
Citation: Veterinary Clinics of North America-Food Animal Practice, 2006; 22(3):623-643
Publisher: W B Saunders Co
Issue Date: 2006
ISSN: 0749-0720
1558-4240
Statement of
Responsibility: 
Ryan M. O’Handley and Merle E. Olson
Abstract: Although differing considerably with respect to their biology, the parasites Giardia duodenalis and Cryptosporidium parvum have often been discussed collectively because of their role as common causes of waterborne gastrointestinal disease in humans. Because both parasites are extremely common in ruminants, much of the discussion and research concerning G duodenalis and C parvum during the past decade has focused on their zoonotic potential and the role of ruminants as reservoirs for human infection. By contrast, the importance of these parasites as causes of disease and production losses in ruminants appears to have received little attention. Recent research indicates that, although both G duodenalis and C parvum infections in ruminants do pose some risk for zoonotic transmission, the risk is much less significant than was once believed and is easily managed. Research also indicates that, although G duodenalis is not likely to be a major cause of clinical disease in ruminants, it may have an important and overlooked impact on production. C parvum, by contrast, remains an important cause of diarrhea in neonatal ruminants, but it does not appear to be as significant a pathogen in beef calves as it is in dairy calves. In addition, abomasal cryptosporidiosis, caused by C andersoni, may be an emerging pathogen of significant economic importance in the beef and dairy cattle industries.
Keywords: Animals; Animals, Newborn; Ruminants; Humans; Cryptosporidium parvum; Zoonoses; Cryptosporidiosis; Giardiasis; United States
Rights: © 2006 Elsevier Inc. All rights reserved.
RMID: 0020108639
DOI: 10.1016/j.cvfa.2006.07.002
Appears in Collections:Animal and Veterinary Sciences publications

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