Table 1.
Epidemiological data for the sequenced samples.
Fig 1.
CHIKV transmission dynamics in Brazil (2014–2019).
(A) Map of Brazil and Americas showing sampling location of the CHIKV genomes from this study (white circles). (B) Weekly notified chikungunya cases normalized per 100K individuals per Brazilian region in 2015–2020 (until EW06). Incidence (cases per 100K population) is presented in log10 for visual purposes. Epidemic curves are coloured according to geographical macro region: SE = Southeast, NE = Northeast, MW = Midwest, N = North, S = South. (C) Time-scaled phylogeographic tree of 120 complete and near-complete CHIKV genome sequences from the ECSA genotype sampled in Brazil and Americas. Colours represent different sampling locations according to the legend on the left of the tree. Tip circles (white) represent the genome sequences generated in this study. Skyline plot (black and gray lines) is superimposed. Relative genetic diversity is represented here as a surrogate for the product of effective population size and generation time. The solid black line represents the mean relative genetic diversity and the light gray area around the line represents the 95% HPD interval of the estimates.