Volume 25, Number 4—April 2019
Dispatch
Genomic Survey of Bordetella pertussis Diversity, United States, 2000–2013
Figure 2

Figure 2. Phylogenetic reconstruction of all 170 isolates and the reference Tohama I (GenBank accession no. CP010964). Isolate metadata and molecular characteristics are color coded, as detailed in the key. Scale bar indicates substitutions per site. CDC, Centers for Disease Control and Prevention; fim, fimbria; fwd, forward insertion; rev, reverse insertion; PFGE, pulsed-field gel electrophoresis; prn, pertactin; ptx, pertussis toxin.
1Additional members of the CDC Pertussis Working Group are listed at the end of this article.