Strains used in this study (Epidemiologic data)1.

1Missing or Unknown data has been intentionally left blank.2Samples having an “A” preceeding a four digit code are samples for which we possess live culture material. Samples having a 10-digit code were received as DNA from part of a historic collection maintained at the Centers for Disease Control and Prevention.3Two letter state codes are used when referencing states within the United States, otherwise the state is written out. WBNP is Wood Buffalo National Park.4Centroids were used for locations where state of origin information was available but Global Positioning System data was unavailable.