Table 4. Number of PRV-positive samples and number of coinfected PRV-positive samples in different regions of Shandong province from 2015 to 2018.
| City | No. | PRV + PRRSV | PRV + PCV2 | PRV + CSFV |
|---|---|---|---|---|
| Tai'an | 67 | 8 | 28 | 5 |
| Linyi | 44 | 8 | 15 | 2 |
| Ji'ning | 22 | 4 | 11 | 1 |
| Liaocheng | 20 | 1 | 10 | 1 |
| Laiwu | 20 | 3 | 5 | 1 |
| Dongying | 17 | 1 | 4 | 0 |
| Binzhou | 15 | 1 | 3 | 2 |
| Zaozhuang | 11 | 1 | 3 | 1 |
| Ji'nan | 9 | 0 | 1 | 0 |
| Heze | 8 | 1 | 1 | 1 |
| Weifang | 6 | 1 | 2 | 0 |
| Dezhou | 5 | 0 | 2 | 1 |
| Zibo | 5 | 0 | 3 | 0 |
| Qingdao | 3 | 0 | 1 | 0 |
| Rizhao | 2 | 1 | 1 | 0 |
| Weihai | 2 | 1 | 0 | 0 |
| Yantai | 1 | 0 | 0 | 0 |
| Total | 257 | 31/257 (12.1%) | 90/257 (35.0%) | 15/257 (5.8%) |
PRRSV = porcine reproductive and respiratory syndrome virus; PCV2 = porcine circovirus type 2; CSFV = classic swine fever virus.