Figure 3: Correlation coefficients of antibody reactions, percent similarity of amino acid sequences and phylogenetic dendrogram between seven VP1 proteins.

**represents p < 0.01. aEnterovirus A. bEnterovirus B. CEnterovirus C. dHepatitis A virus. The phylogenetic dendrogram were drawn on the basis of the amino acid sequences of the entire VP1 protein using the Neighbor-Joining method of MEGA software, and the amino acid sequences of EV71 VP1, CA16 VP1, CA5 VP1, CA6 VP1, CB3 VP1, PV1 VP1 and HAV VP1 were obtained from GenBank (GenBank accession number: EU703812, ACT52617.1, AEJ54594.1, AGI41373.1, AGR84785.1, AGE13930.1 and A3FMB2.1, respectively).