Figure. Maximum-likelihood tree based on the nucleic acid sequences of the Japanese encephalitis virus (JEV) envelope gene for 3 samples from persons in Xinjiang Province, China (samples 5, 6, and 8), and reference sequences. SA 14-14-2 is the JEV vaccine strain. The branch colors represent different JEV genotypes: blue branches indicate genotype 1; green, genotype 2; pink, genotype 3; purple, genotype 4; and orange, genotype 5. Values at nodes are bootstrap values supporting the branch. Scale bar indicates the substitution rate of equal-length branches.