Table 2.

List of field virus isolates used in the study

Virus isolate	Herd	Material	Origin	Genotype	Biotype	GenBank accession no.
SX-02XN19	3	Cell culture	Shaanxi	1a	ncp	MT316318
SX-2	3	Serum	Shaanxi	1a	a-	MW142339
SX-1-2	4	Serum	Shaanxi	1a	–	MW142341
SX-01XN19	5	Cell culture	Shaanxi	1c	ncp	MT316327
SX-3	6	Serum	Shaanxi	1a	–	MW142340
SX-219	7	Serum	Shaanxi	1a	–	MW142338
SX-1-1	8	Serum	Shaanxi	1a	–	MW142343
SX-3-46	9	Serum	Shaanxi	1a	–	MW142342
SX-3-2	9	Serum	Shaanxi	1a	–	MW142344
SX-3-53	10	Serum	Shaanxi	1a	–	MW142345
NX-69209	11	Cell culture	Ningxia	1a	ncp	MW142337
NX-03XN19	12	Cell culture	Ningxia	1c	ncp	MT316319
NX-59181	12	Cell culture	Ningxia	1c	ncp	MW142336
NX-59211	12	Cell culture	Ningxia	1c	ncp	MW142335
NX-04XN19	12	Cell culture	Ningxia	1c	ncp	MT316320
NX-10XN19	12	Cell culture	Ningxia	1c	ncp	MT316325
NX-05XN19	13	Cell culture	Ningxia	1a	ncp	MT316321
XJ-06XN19	15	Cell culture	Xinjiang	1a	ncp	MT316322
XJ-07XN19	15	Cell culture	Xinjiang	1a	ncp	MT316323
XJ-08XN19	15	Cell culture	Xinjiang	1a	ncp	MT316324
XZ-N24	16	Serum	Tibet	1a	–	MW142346
XZ-09XN19	17	Cell culture	Tibet	1c C	ncp	MT316328

^aThe sample was not successfully isolated from cell culture