Fig. 4: maximum likelihood phylogenetic tree of South American genotype I yellow fever virus (YFV) strains, highlighting in red the MG66-L strain isolated in the southeastern state of Minas Gerais. Branches colours indicate the year of sample collection. Isolates from Amazon region are labelled in gray and isolates from Extra-Amazon region are labelled in black and highlighted by decade of wave (A). The sub-lineage YFVMG/ES/RJ is collapsed at the top of the tree. Nucleotide differences between selected genomes (B).
