Table 2.
Detection frequency of various bovine enteric pathogens among feces from diarrheic and healthy calves in the Midwest and association between positivity and calf diarrhea.
| Pathogens | Overall % positive | % positives among diarrheic calves | % positives among healthy calves | p-Value | Odds ratio |
|---|---|---|---|---|---|
| Bovine norovirus | 29.1 | 44.7 (89/199)a | 16.3 (40/245)a | 0.042 | 2.0 (1.002–3.9)b |
| Cryptosporidium parvumc | 15.1 | 33.7 (67/199) | 0.0 (0/245) | 0.0007 | 173.0 (8.9–3365.1) |
| Bovine coronavirus | 20.9 | 31.7 (63/199) | 12.2 (30/245) | 0.0034 | 2.7 (1.4–5.1) |
| Bovine rotavirus group A | 12.2 | 27.1 (54/199) | 0.0 (0/245) | 0.0025 | 79.9 (4.7–1369.5) |
| Nebovirus | 0.9 | 21.6 (43/199) | 1.6 (4/245) | 0.0001 | 16.7 (4.0–68.8) |
| Salmonella spp. | 4.1 | 9.0 (18/199) | 0.0 (0/245) | 0.0056 | 80.6 (3.6–1803.7) |
| Bovine enterovirus | 20.3 | 5.0 (10/199) | 32.7 (80/245) | <0.0001 | 0.113 (0.04–0.3) |
| Escherichia coliK99+ | 1.8 | 4.0 (8/199) | 0.0 (0/245) | 0.0143 | 98.4 (2.5–3859.9) |
| Bovine torovirus | 1.1 | 2.5 (5/199) | 0.0 (0/245) | 0.2404 | 10.4 (0.2–520.3) |
| Bovine viral diarrhea virus | 0.5 | 0.5 (1/199) | 0.4 (1/245) | – | – |
| Clostridium perfringens toxin β | 0.0 | 0.0 (0/199) | 0.0 (0/245) | – | – |
a
Numbers in the parenthesis show number of positive feces/number of samples tested.
b
Numbers in the parenthesis is 95% confidence interval of the estimated odds ratio.
c
The bold letters indicate microorganisms detected only in feces from diarrheic calves.