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Summary of positive samples as diagnosed by 4 methods for detection of Mycobacterium avium subsp. paratuberculosis in milk and feces samples collected in dairy herds infected with Johne’s disease in southwestern Ontario
| Method | Milk culture | Milk direct PCR | Milk nested PCR | Fecal culture |
|---|---|---|---|---|
| Positive/Total (percentage) | 46/133 (34.6%) | 38/134 (28.4%) | 72/134 (53.7%) | 46/110 (41.8%) |
