Figure 4: Phylogenetic tree of DENV-2 epidemic strains in Xishuangbanna, Yunnan, China 2015.

The phylogenetic tree was constructed using the Maximum Likelyhood phylogeny test. Bootstrap values were set for 500 repetitions. (● denotes DENV strains from China, ▲ denotes strains from other Asian countries, and ■ denotes strains from other countries outside of Asia, and the red denotes the standard strains of four dengue serotypes. The sequences of the reference strains were derived from the NCBI GenBank database (www.ncbi.nlm.nih.gov).