Table 6.
Comparison of the detection frequency of bovine rotavirus group A (BRV-A), bovine coronavirus (BCoV) and Cryptosporidium parvum (C. parvum) in feces from diarrheic calves before/after use of a PCR-based bovine enteric panel (BEP) in Iowa State University Veterinary Diagnostic Laboratory.
| Year | BRV-A | BCoV | C. parvum | |
|---|---|---|---|---|
| ELISA | ELISA | Direct microscopya | ||
| Before BEP | 2003 | 29.8% (131/440)b | 12.4% (50/405) | 12.2% (15/123) |
| 2004 | 25.8% (102/396) | 11.8% (46/391) | 12.7% (13/102) | |
| 2005 | 25.6% (103/402) | 9.8% (41/418) | 8.4% (12/143) | |
| 2006 | 18.6% (67/361) | 17.0% (24/141) | 5.7% (7/123) | |
| 2007 | 22.7% (123/542) | – | 4.5% (5/111) | |
| Average | 24.6% (123/2142) | 11.9% (161/1355) | 8.6% (52/602) |
| Year | BRV-A |
BCoV |
C. parvum |
|
|---|---|---|---|---|
| Real-time PCR | ||||
| After BEP | 2008 | 40.7% (198/487) | 36.8% (179/487) | 42.5% (207/487) |
| 2009 | 39.5% (213/539) | 27.8% (150/539) | 42.3% (228/539) | |
| 2010 | 40.1 (242/603) | 28.4% (171/603) | 38.1% (230/603) | |
| 2011 | 29.2% (176/602) | 25.1% (151/602) | 31.6% (190/602) | |
| Average | 37.2% (829/2231) | 29.2% (651/2231) | 38.3% (855/2231) | |
a
Acid-fast staining was used.
b
% positive (number of positives/number of total cases).