Fig 1. Phylogenetic reconstruction for flagellin gene fragment of the Mexican patient with Lyme disease and of several members of the genus Borrelia.

The phylogenetic relationships were inferred by Bayesian Inference based on the HKY+G substitution model with a total of 255 bp. Posterior probabilities >0.5 are indicated at nodes. Number in parentheses are GenBank accession numbers. Scale bar indicates nucleotide substitutions per site. Blue sequence indicates isolate obtained from the recent Mexican patient.