Table 3.
Pairwise comparisons of full-length genome and ORF1b gene sequences of PRRSV isolates
| Virus strain | % Nucleotide sequence divergencea |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CH-1a | HB-1(sh)/2002 | P129 | NVSL 97-7985 | BJ-4 | RespPRRS MLV | MLV RespPRRS/Repro | VR-2332 | PL97-1 | PA8 | 16244B | SP | Lelystad | |
| CH-1a | 4.0 | 5.0 | 5.9 | 8.6 | 8.6 | 8.5 | 8.5 | 8.7 | 8.8 | 9.1 | 9.4 | 38.4 | |
| HB-1(sh)/2002 | 3.6 | 7.1 | 7.9 | 10.2 | 10.2 | 10.1 | 10.1 | 10.2 | 10.4 | 10.5 | 10.9 | 38.6 | |
| P129 | 4.7 | 6.5 | 5.7 | 8.6 | 8.5 | 8.5 | 8.4 | 8.6 | 8.7 | 9.1 | 9.2 | 38.1 | |
| NVSL 97-7985 | 4.6 | 6.2 | 5.1 | 8.9 | 8.8 | 8.8 | 8.8 | 8.9 | 9.1 | 9.3 | 9.6 | 38.3 | |
| BJ-4 | 7.5 | 8.6 | 7.1 | 7.1 | 0.2 | 0.2 | 0.4 | 0.5 | 0.8 | 1.6 | 6.5 | 38.1 | |
| RespPRRS MLV | 7.5 | 8.5 | 7.1 | 7.0 | 0.1 | 0.1 | 0.3 | 0.4 | 0.7 | 1.5 | 6.4 | 38.0 | |
| MLV RespPRRS/Repro | 7.5 | 8.5 | 7.1 | 7.0 | 0.1 | 0.0 | 0.3 | 0.3 | 0.6 | 1.4 | 6.4 | 38.0 | |
| VR-2332 | 7.6 | 8.6 | 7.1 | 7.1 | 0.4 | 0.3 | 0.3 | 0.5 | 0.7 | 1.5 | 6.4 | 38.0 | |
| PL97-1 | 7.7 | 8.7 | 7.3 | 7.3 | 0.4 | 0.3 | 0.3 | 0.6 | 0.8 | 1.6 | 6.5 | 38.0 | |
| PA8 | 7.7 | 8.7 | 7.3 | 7.3 | 0.6 | 0.5 | 0.5 | 0.8 | 0.8 | 1.9 | 6.7 | 38.0 | |
| 16244B | 7.9 | 9.1 | 7.6 | 7.4 | 1.3 | 1.2 | 1.1 | 1.4 | 1.4 | 1.6 | 7.2 | 38.0 | |
| SP | 7.3 | 8.5 | 7.1 | 7.0 | 4.1 | 4.0 | 4.0 | 4.0 | 4.2 | 4.2 | 4.6 | 38.2 | |
| Lelystad | 35.9 | 36.3 | 35.6 | 35.9 | 35.7 | 35.7 | 35.6 | 35.7 | 35.7 | 35.7 | 35.5 | 35.9 | |
a
The percent nucleotide sequence divergences of the complete genomes are presented at the upper right. The percent nucleotide sequence divergences of the ORF1b genes are shown in the lower left. The percentages of PL97-1 sequence divergence are indicated in boldface type.