Fig. 5

On the right: A dendrogram resulting from hierarchical clustering (using Euclidean distance and a Ward aggregation method). On the left: the normalized cumulative case numbers according to clusters on the cross-border region between French Guiana and Brazil, January 2017—January 2018. The period during which 50% of the total case number is reached, for all locality clusters, is represented in color. The blue curve represents the normalized cumulative curve of the total number of cases per cluster