Spatial and temporal invasion dynamics of the 2014–2017 Zika and chikungunya epidemics in Colombia
Fig 2
Correlations between city invasion weeks and geographic distance from first invaded cities for CHIKV and ZIKV.
Week of invasion for each invaded city is shown on the y-axis for both plots. These weeks are plotted against (A) the geographic distance from the most likely origin of CHIKV in Colombia, Barranquilla and (B) the geographic distance from the most likely origin of ZIKV in Colombia, also Barranquilla. Pearson’s correlation coefficients and significance are shown above each plot.