Dendrogram of MLVA-8 analysis of <i>B. anthracis</i> isolates collected from the 1976 California, 2006 New York, 2007 Connecticut anthrax cases, and 2009 New Hampshire case.

<p>All other genotypes are reference genotypes from Keim et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028274#pone.0028274-Keim1" target="_blank">[8]</a>. For the California case, the clinical isolates were GT 76 (n = 4), while environmental isolates were GT 71 (n = 2), GT 72 (n = 2), GT 92 (n = 1), and GT 105 (n = 1). All clinical and environmental isolates from the New York (one clinical, 35 environmental) and Connecticut cases (one clinical specimen, 15 environmental isolates) were GT 1. All clinical (n = 2) and environmental (n = 9) isolates from the NH case were GT 149. Scale bar indicates amount of evolutionary change <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028274#pone.0028274-McDonald1" target="_blank">[12]</a>.