Skip to main content
Fig. 4 | BMC Infectious Diseases

Fig. 4

From: Systemic dengue infection associated with a new dengue virus type 2 introduction in Brazil – a case report

Fig. 4

a Maximum likelihood phylogenetic trees for DENV-2 based on full-length genome sequences (n = 879). The tree is midpoint-rooted and the values near the principal nodes represent statistical support values using the ‘ultrafast’ bootstrap approximation (UFboot) from IQ-TREE. Distinct colors represent different genotypes. The sequences used in phylogeography are marked with the dotted red square in the American/Asian genotype. The two Brazilian sequences isolated in 2019 are highlighted with the black circle. b A regression of root-to-tip genetic distance against the time of sampling and showing a positive relationship (r = 0.99) indicative of a high rate of evolutionary change over the sampling period. c Time-stamped, MCC tree of the DENV-2 American/Asian genotype associated with the Brazilian sequences isolated during 2019 (n = 17). The distinct colors represent samples from different locations. The values near the nodes represent posterior probability support

Back to article page