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Phylogenetic trees of individual genes of EEEV. ML phylogenetic trees inferred for different regions of the EEEV genome are indicated in black. Well-supported nodes by bootstrap values over 70% are marked by asterisks. Sequences from Florida, New York, Massachusetts, and other places are colored and described in the key. Phylogenetic trees were rooted using the oldest EEEV strain, Ten Broeck, collected in 1933, and scale bars represent the number of nucleotide substitutions per site.
