PMC

EM-like lesion on hip of Patient 7 following a confirmed female Amblyomma americanum attachment at the center of the lesion site.

Erythema migrans (EM)-like lesion on Patient 3 following tick exposure in northwestern Florida in November 2007. The lesion was located on the back of the left arm above the elbow. Note the suspected tick bite punctum in the center of the lesion.

Neighbor joining bootstrap phylogenetic tree based on a comparison of flagellin (flaB) gene sequences obtained from human patients and ticks in Florida and Georgia with Borrelia burgdorferi sensu lato reference strains. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1,000 replicates) are shown at the branch nodes. Evolutionary distances were computed using the Maximum Composite Likelihood method. All positions containing gaps and missing data were eliminated. There were a total of 355 positions in the final data set.