Figure 3.

DENV-1 phylogenetic tree. Tree was generated by Neighbor-Joining method based on 354 bp nucleotide sequences of CprM gene region. Each isolate is denoted by country of isolation and last two digits of year of isolation, followed by virus ID. Bootstrap support values (>50%) are shown for major nodes on the tree. All horizontal branch lengths are drawn to scale. DENV-1 sequences that were sequenced in the study are in bold and other Indian sequences taken for comparison are in bold italics.