Volume 18, Number 4—April 2012
Research
Comparison of Escherichia coli ST131 Pulsotypes, by Epidemiologic Traits, 1967–2009
James R. Johnson
, Marie-Hélène Nicolas-Chanoine, Chitrita DebRoy, Mariana Castanheira, Ari Robicsek, Glen Hansen, Scott Weissman, Carl Urban, Joanne Platell, Darren Trott, George Zhanel, Connie Clabots, Brian D. Johnston, Michael A. Kuskowski, and the MASTER Investigators
, Marie-Hélène Nicolas-Chanoine, Chitrita DebRoy, Mariana Castanheira, Ari Robicsek, Glen Hansen, Scott Weissman, Carl Urban, Joanne Platell, Darren Trott, George Zhanel, Connie Clabots, Brian D. Johnston, Michael A. Kuskowski, and the MASTER InvestigatorsTable 2
Geographic origin and ecologic source of 65 pulsotypes among 579 Escherichia coli ST131 isolates, 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‡ |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 1 | 2 | 3 | 4 | |||
| 2 | 28 | 13 | 15 | NA | NA | NA | NA | 26 | 2 | NA | NA | |
| 3 | 12 | 4 | 8 | 0 | NA | NA | NA | 10 | 2 | 0 | NA | |
| 4 | 10 | 1 | 3 | 5 | 1 | NA | NA | 9 | 0 | 0 | 1 | |
| 5 | 3 | 0 | 2 | 1 | 0 | 0 | NA | 1 | 2 | 0 | 0 | |
| 6 | 3 | 0 | 0 | 0 | 2 | 1 | 0 | 2 | 1 | 0 | 0 | |
| 7 | 3 | 0 | 0 | 0 | 1 | 2 | 0 | 2 | 0 | 1 | 0 | |
| >8 | 6 | 0 | 1 | 1 | 0 | 1 | 3 | 1 | 3 | 2 | 0 | |
*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.
