Fig. 1

Phylogenetic tree based on serogroup-specific ENV CprM sequences of the viral polyprotein gene placed the Sudan DENV isolates with DENV serotype 3. The phylogenetic tree was constructed using the Maximum Likelihood method based on the Tamura-Nei model. Evolutionary analyses were conducted in MEGA7 with 1000 bootstrap replicates shown at relevant nodes of the constructed tree. The phylogenetic tree involved analysis of 41 nucleotide sequences of Known serotypes of DENV isolates circulating globally. The accession numbers, country of origin and date of isolation were mentioned for each virus isolate when available. The Sudan DENV-3 sequences recovered in this study were highlighted in red color for clarity. The scale bar expresses the genetic distance