Figure 2

Maximum clade credibility trees of eight segments.

(a) HA segment, (b) NA segment, (c) PB2 segment, (d) PB1 segment, (e) PA segment, (f) NP segment, (g) M segment and (h) NS segment. Horizontal bar indicates the 95% HPD of each node. Strains in parentheses indicate that these strains share identical sequences with the sequence on the tree.