Table 1. Virus strains used in this study.
| Strain | Multiplex PRRSV real-time RT-PCR | ADIAVET PRRS EU/NA | |||
| PRRSV type 2 | HP-PRRSV | PRRSV type 1 | PRRSV type 2 | PRRSV type1 | |
| Cq | Cq | Cq | Cq | Cq | |
| I 10 (Intervet) | >40 | >40 | 22.84 | >40 | 28.10 |
| Cobbelsdorf | >40 | >40 | 24.66 | >40 | 28.62 |
| Stendal V852 | >40 | >40 | 23.22 | >40 | 27.00 |
| Stendal V953 | >40 | >40 | 25.27 | >40 | 26.42 |
| Stendal V1904 | >40 | >40 | 24.46 | >40 | 27.72 |
| Stendal V1952/97 | >40 | >40 | 32.73 | >40 | 28.06 |
| Stendal V1445/99 | 23.63 | >40 | >40 | 26.16 | >40 |
| USA, VD28775/2 | 23.15 | >40 | >40 | 24.87 | >40 |
| USA, VD29949/17 | 24.63 | >40 | >40 | 27.80 | >40 |
| China | 23.90 | 23.95 | >40 | 26.79 | >40 |
| USA 2 | 24.01 | >40 | >40 | 26.23 | >40 |
| USA 18 | 20.86 | >40 | >40 | 25.68 | >40 |
| Lena | >40 | >40 | 25.72 | >40 | 26.04 |