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Volume 18, Number 4—April 2012

Research

Comparison of Escherichia coli ST131 Pulsotypes, by Epidemiologic Traits, 1967–2009

James R. JohnsonComments to Author , 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
Author affiliations: Veterans Affairs Medical Center, Minneapolis, Minnesota, USA (J.R. Johnson, C. Clabots, B.D. Johnston, M.A. Kuskowski); University of Minnesota, Minneapolis (J.R. Johnson, B.D. Johnston, M.A. Kuskowski); Hôpital Beaujon, Clichy, France (M.-H. Nicolas-Chanoine); The Pennsylvania State University, College Park, Pennsylvania, USA (C. DebRoy); JMI Laboratories, North Liberty, Iowa, USA (M. Castanheira); NorthShore University HealthSystem, Evanston, Illinois, USA (A. Robicsek); Hennepin County Medical Center, Minneapolis (G. Hansen); University of Washington, Seattle, Washington, USA (S. Weissman); New York Hospital Queens, Flushing, New York, USA (C. Urban); New York University School of Medicine, New York, New York, USA (C. Urban); University of Queensland, Brisbane, Queensland, Australia (J. Platell); University of Adelaide, Adelaide, South Australia, Australia (D. Trott); University of Manitoba, Winnipeg, Manitoba, Canada (G. Zhanel)

Main Article

Table 3

Segregation, by geographic region, of multiple-isolate pulsotypes and of Escherichia coli ST131 isolates from the pulsotypes, 1967–2009*

Multiple-isolate pulsotype group
No. isolates, by geographic region, from pulsotype group (474)
No. pulsotypes, by geographic region, among isolate group (65)
Source region Total no. pulsotypes in group (65) Total no. isolates in group (474)
US (358) W (47) MW (139) S (84) NE (88) CAN (52) INT (64) US (61) W (24) MW (38) S (23) NE (31) CAN (15)
US 61 463 NA 47 139† 84 88 50 55‡ NA
West 24 348 272† NA 105 62 58 41 35‡ 24 NA
MW 38 408 309 33† NA 74 63‡ 47 52 38† 15 NA
South 23 350 272 23‡ 108 NA 57† 43 35‡ 23 10 17 NA
NE 31 368 287† 23‡ 106 68 NA 43 38‡ 31 12 17 12 NA
CAN 15 279 201† 10‡ 92† 52 47 NA 26§ 14 5 11 7 8 NA
INT 20 336 231‡ 17‡ 102 58 54† 41 NA 17 14 14 8 10 5

*Values in parentheses are n values. Boldface indicates significant associations; boldface italics indicate negative associations. Blank spaces indicate duplicated comparisons (mirror image of matrix). ST, sequence type; US, United States; W, West; MW, Midwest; S, South; NE, Northeast; CAN, Canada; INT, international (non-US locales other than Canada); NA, not applicable.
†p<0.05 for indicated region vs. all other regions (Fisher exact test).
‡p<0.001 for indicated region vs. all other regions (Fisher exact test).
§p<0.01 for indicated region vs. all other regions (Fisher exact test).

Main Article

1MASTER (Macrorestriction Analysis of ST131 for Epidemiologic Research) Investigators who contributed data are listed at the end of this article.

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