Figure 4. Recombination map of sequences in clusters 4, 5, and 9, and sub-region neighbor-joining tree.

(A)The recombination map of sequences in the clusters 4, 5, and 9 of the near-full-length sequences phylogenetic tree.(B)The sub-region tree of corresponding regions as shown by roman numerals. The closely related sequences from Asian countries and subtype reference sequences are included.