Phylogenetic analysis showed that A/Swine/GuangDong/711/2001 had a close relationship with A/South Carolina/1/18 and A/Swine/ Wisconsin/238/97.

• 从系统发生树来看, A/Swine/GuangDong/711/2001 与 A/SouthCarolina/1/18和A/Swine/Wisconsin/238/97的亲缘关系相近。