Volume 18, Number 4—April 2012
Comparison of Escherichia coli ST131 Pulsotypes, by Epidemiologic Traits, 1967–2009
|No. isolates per pulsotype||No. pulsotypes||No. pulsotypes with isolate from indicated no. geographic regions†
||No. pulsotypes with isolates from indicated no. ecologic sources‡
*ST, sequence type; NA, not applicable (no. regions or source groups exceeds no. isolates in pulsotype).
†The 6 geographic regions included the US West, Midwest, South, and Northeast; Canada; and other international sites (collectively).
‡The 5 source groups included humans, companion animals, food animals, other animals, and food and water combined.
1MASTER (Macrorestriction Analysis of ST131 for Epidemiologic Research) Investigators who contributed data are listed at the end of this article.
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