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. 2018 Mar 30;12(4):497–507. doi: 10.1111/irv.12549

Figure 1.

Figure 1

Phylogenetic tree of HA and NA genes of influenza A virus in Korea during the 2011‐2016 seasons. The (A) HA and (B) NA sequences of A/H3N2 isolate in Korea showed clustering in the phylogenetic tree. The sequences of clade 3C.2a in HA tree are shown in red font (B) NA of A/H3N2. The phylogenetic tree of A/H1N1 isolate (C) HA and (D) NA sequences reveals distinct groups. The phylogenetic tree was inferred from the recommended H1N1 vaccine strains (A/California/07/2009), H3N2 vaccine (A/Perth/16/2009, A/Victoria/361/2011, A/Texas/50/2012, A/Switzerland/9715293/2013), and clinical isolates identified in Korea (2011‐2016). The font colors represent the vaccine strain (blue)