Objective—To evaluate 2 rapid, patient-side assays
for detection of Cryptosporidium parvum in feces
from neonatal calves with diarrhea.
Design—Diagnostic test evaluation.
Sample Population—Fecal samples from 96 neonatal
(1 to 30 days old) calves with diarrhea.
Procedure—Results of the rapid assays were compared
with results of microscopic examination of fecal smears
that had been stained with diamant fuchsin stain.
Results—One of the rapid assays correctly identified
56 of 62 (90%) fecal samples positive for C parvum
oocysts and 33 of 34 (97%) fecal samples negative
for oocysts. The other assay correctly identified 53 of
62 (85%) fecal samples positive for oocysts and 33 of
34 (97%) fecal samples negative for oocysts.
Conclusions and Clinical Relevance—Results suggest
that these 2 rapid assays are accurate when
used to detect C parvum in fecal samples from
neonatal calves with diarrhea. ( J Am Vet Med Assoc 2004;225:1090–1092)