Table 1.
Summary of enteric lesions in relation with in situ hybridization for PCV2 (ISH-PCV2).
| Single lesion or combination | Number of pigs | PCV2-SD diagnosis |
Positive ISH-PCV2 without PCV2-SD diagnosis |
Negative ISH-PCV2+ | ||
|---|---|---|---|---|---|---|
| ISH-PCV2 positive | ISH-PCV2 negative* | ISH-PCV2 positive | ISH-PCV2 negative* | |||
| Enteritis | 12 | 4 | 1 | 2 | – | 5 |
| Catarrhal | 9 | 3 | – | 2 | – | 4 |
| Granulomatous | 2 | 1 | 1 | – | – | – |
| Haemorrhagic | 1 | – | – | – | – | 1 |
| Colitis | 53 | 17 | 3 | 16 | 5 | 12 |
| Catarrhal | 44 | 15 | 3 | 11 | 4 | 11 |
| Fibrinous | 6 | 2 | – | 3 | – | 1 |
| Ulcerative | 2 | – | – | 2 | – | – |
| Muco-haemorrhagic | 1 | – | – | – | 1 | – |
| Enterocolitis | 31 | 12 | 2 | 4 | 6 | 7 |
| Catarrhal | 21 | 7 | – | 3 | 4 | 7 |
| Fibrinous | 5 | 2 | 1 | – | 2 | – |
| Granulomatous | 2 | 1 | – | 1 | – | – |
| Catarrhal and fibrinous | 1 | – | 1 | – | – | – |
| Ulcerative | 1 | 1 | – | – | – | – |
| Other | 1 | 1 | – | – | – | – |
| Total | 96 | 33 | 6 | 22 | 11 | 24 |
PCV2-SD: porcine circovirus type 2 systemic disease.
+
ISH-PCV2 was negative in all the tissues analysed.
*
ISH-PCV2 was negative in the intestine but positive in lymph nodes and tonsil.