Characterization and Pathogenicity of the Novel Porcine Reproductive and Respiratory Syndrome Virus 1 Strain SL-01 in China

Table 1

Nucleotide sequence similarity between SL-01 strain and reference strains.

SL-01	Amervac PRRSV	BJEU06-1	EuroPRRSV	HKEU16	Lelystad virus	NMEU09-1	NVDC-NM1-2011
Complete genome	85.4	84.1	85.4	84.1	86.7	82.2	83.6
ORF1a	84	82.3	84.3	80	86	79.1	81.9
ORF1b	86	84.8	86.6	85.2	87	85.2	84.3
ORF2a	87.7	88	86.9	86.5	88.3	84	85.7
ORF2b	93	94.8	92.5	88.7	93.4	90.1	91.5
ORF3	85.6	84.8	84.7	85	86.6	83.9	83.7
ORF4	83.3	84.1	83	83.7	84.6	84.7	82.5
ORF5	84.7	82	82.8	84.7	84.7	82	83.8
ORF6	91.4	88.9	90.4	90.4	90.4	91.2	88.3
ORF7	87.9	89.4	87.9	89.4	89.4	87.9	88.6