TABLE 7.

Reference viruses representing each subclade on the HA phylogenetic tree

GISAID accession no.	Isolate name	Subclade
EPI447598	A/Shanghai/05/2013	W1
EPI447629	A/Anhui/02/2013	W1
EPI447614	A/Zhejiang/02/2013	W1
EPI439507	A/Anhui/1/2013	W1
EPI447599	A/Shanghai/07/2013	W1
EPI447596	A/Jiangsu/01/2013	W1
EPI627705	A/Guangdong-Guangzhou/XN08763/2014	W2-1
EPI628512	A/Guangdong/24999/2013	W2-1
EPI627649	A/Guangdong-Guangzhou/XN08423/2014	W2-1
EPI627745	A/Guangdong/0010/2014	W2-1
EPI628520	A/Guangdong/24997/2013	W2-1
EPI628096	A/Guangdong/0012/2014	W2-1
EPI628440	A/Environment/Guangdong/02621/2013	W2-1
EPI627928	A/Fujian/15/2014	W2-2
EPI628056	A/Jiangsu/09387/2014	W2-2
EPI628032	A/Anhui/09186/2014	W2-2
EPI628248	A/Jiangsu/09041/2014	W2-3
EPI627593	A/Zhejiang/13/2014	W2-3
EPI576623	A/Environment/Shanghai/PD-JZ-01/2014	W2-3
EPI627808	A/Shandong/01/2014	W2-4
EPI627537	A/Zhejiang/23/2014	W2-4
EPI627808	A/Shandong/01/2014	W2-4
EPI552399	A/Zhejiang/17/2014	W2-4
EPI628312	A/Zhejiang/07803/2014	W2-4
EPI627441	A/Anhui/01887/2014	W2-5
EPI627912	A/Environment/Xinjiang/73033/2014	W2-5
EPI628416	A/Environment/Jiangsu/03137/2013	W2-5
EPI628224	A/Fujian/6/2014	W2-6
EPI628272	A/Fujian/3/2014	W2-6
EPI628160	A/Fujian/13/2014	W2-6
EPI566044	A/Guangdong/15SF010/2015	W3-1
EPI628712	A/Environment/Guangdong/22351/2015	W3-1
EPI627489	A/Fujian/19/2014	W3-1
EPI559417	A/Hong Kong/2550/2015	W3-1
EPI566036	A/Guangdong/15SF018/2015	W3-1
EPI627209	A/Guangdong/15SF002/2015	W3-2
EPI628648	A/Environment/Guangdong/21123/2015	W3-2
EPI627057	A/Guangdong/15SF051/2015	W3-2
EPI628728	A/Anhui/33228/2015	W3-3
EPI627385	A/Guangdong/02497/2014	W3-3
EPI627097	A/Jiangsu/19758/2015	W3-3
EPI628568	A/Anhui/40095/2015	W3-3
EPI627017	A/Jiangsu/18828/2014	W3-3
EPI628544	A/Beijing/40610/2015	W3-3
EPI566052	A/Xinjiang/05916/2014	W3-3