Table 1.

Similarity of nucleotide sequences of the IDV HEF gene.

	D/JY 3002	D/JY 3097	D/JY 3125	D/JY 3237	D/JY 3242	D/OK/11	D/660/13	D/Yama 2016	D/Yama 2019	D/CA 2019	D/JY 3001	D/SD 2014
D/JY 3002	100
D/JY 3097	99.79	100
D/JY 3125	97.56	97.54	100
D/JY 3237	98.89	98.77	97.99	100
D/JY 3242	93.75	93.75	94.52	93.65	100
D/OK/ 11	95.01	95.03	96.49	94.8	95.86	100
D/660/ 13	94.44	94.55	95.33	94.28	98.14	96.63	100
D/Yama 2016	94.81	94.87	95.12	94.33	95.13	96.29	96.14	100
D/Yama 2019	99.06	98.93	97.38	98.9	94.25	95.24	94.59	94.69	100
D/CA 2019	93.77	93.75	94.34	93.54	94.51	95.36	95.31	94.87	94.04	100
D/JY 3001	98.96	98.82	97.48	99.53	93.63	94.94	94.39	94.49	98.9	93.63	100
D/SD 2014	94.55	94.55	95.91	94.33	95.39	98.78	96.14	95.85	94.79	95.02	94.49	100

Note: Similarities of HEF sequences between reference strains are indicated in blue font. The reference strains include D/swine/Oklahoma/1334/2011 (D/OK/11, D/OK lineage), D/bovine/Oklahoma/660/2013 (D/660/13, D/660 lineage), D/bovine/Yamagata/10710/2016 (D/Yama2016, D/Yama2016 lineage), D/bovine/Yamagata/1/2019 (D/Yama2019, D/Yama2019 lineage), D/bovine/California/0363/2019 (D/CA2019, D/CA2019 lineage), D/bovine/Shandong/Y217/2014 (D/SD2014, D/China sub-lineage) and D/bovine/CHN/JY3001/2021 (D/JY3001, D/Yama2019 lineage). Similarities of HEF sequences between IDV strains identified in this study are indicated in pink font. The new IDV strains are D/JY3002, D/JY3097, D/JY3125, D/JY3237 and D/JY3242. Similarities of HEF sequences between the new IDVs and above reference IDVs are indicated in orange font.