Table 1.
Molecular analysis
| Sample | Date | E ictaluri PCR result |
|---|---|---|
| Batch A (5 fish) | February 25 | + |
| Pre-Filter pad | March 23 | + |
| Fine Filter pad | March 23 | + |
| Feed | March 23 | — |
| Batch B (2 fish) | March 23 | — |
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