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Detection of radiometric culture-positive samples with various amounts of M. avium subsp. paratuberculosis using the HT-J test, based on samples from cattle
| Weeks to peak growth index | No. of live M. avium subsp. paratuberculosis cells per g of fecesa | Total no. of culture positives | % HT-J positive |
|---|---|---|---|
| 3 | ∼105 | 15 | 93.3 |
| 4 | ∼104 | 21 | 81.0 |
| 5 | ∼103 | 27 | 66.7 |
| 6 | ∼101 | 29 | 41.4 |
| 7 | ∼100 | 12 | 33.3 |
| 8 | ≤100 | 5 | 40.0 |
| 9 | ≤100 | 1 | 0.0 |
| 12 | ≤100 | 1 | 0.0 |
Estimate derived from L. Reddacliff et al. (20).
