Abstract：
:We evaluated serum examination as an alternative to fecal analysis for the diagnosis of exposure to Cryptosporidium parvum in cattle. The accuracy of the serum ELISA was compared to the combined results of concentration flotation microscopy and fecal enzyme immunoassay. The expected performance of the serum ELISA at different levels of infection with C. parvum was evaluated using the predicative values positive and negative. Optimal conditions for the serum ELISA can be achieved by diluting the serum samples 1:20 and the conjugate 1:8,000. The serum ELISA had a relatively high sensitivity of 97.5% (95% CI=87-100%) and poor specificity, 4% (95% CI=1-20%). There was a poor agreement between the serum ELISA and the fecal tests (kappa=0) on samples collected from adult cows in a high-risk and a low-risk population. Examination of some of these fecal samples using a PCR detection method demonstrated the presence of C. parvum DNA in 10% of the samples.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Nydam DV,Lindergard G,Guard CL,Schaaf SL,Wade SE,Mohammed HOdoi
10.1007/s00436-002-0665-9subject
Has Abstractpub_date
2002-09-01 00:00:00pages
797-803issue
9eissn
0932-0113issn
1432-1955journal_volume
88pub_type
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