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Volume 17, Number 11—November 2011
CME ACTIVITY - Research

Global Distribution and Epidemiologic Associations of Escherichia coli Clonal Group A, 1998–2007

James R. JohnsonComments to Author , Megan E. Menard, Tsai-Ling Lauderdale, Chris Kosmidis, David Gordon, Peter Collignon, Joel N. Maslow, Arjana Tambić Andrašević, and Michael A. Kuskowski
Author affiliations: Veterans Affairs Medical Center, Minneapolis, Minnesota, USA (J.R. Johnson, M.E. Menard, M.A. Kuskowski); University of Minnesota, Minneapolis (J.R. Johnson, M.A. Kuskowski); National Health Research Institutes, Zhunan, Taiwan (T.-L. Lauderdale); University of Athens Medical School, Athens, Greece (C. Kosmidis); Australian National University, Canberra, Australian Capital Territory, Australia (D. Gordon, P. Collignon); Canberra Hospital, Canberra (P. Collignon); Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA (J.N. Maslow); University of Pennsylvania, Philadelphia (J.N. Maslow); University Hospital for Infectious Diseases, Zagreb, Croatia (A. Tambić Andrašević)

Main Article

Table 2

Phylogenetic group distribution and clonal group A status of extraintestinal Escherichia coli isolates from 32 globally distributed centers, 1998–2007*

Phylogenetic group and clonal group A status No. clonal group A isolates/total no. isolates (%) p value†
Total, n = 2,210 TMP/SMZ susceptible,
n = 1,083 TMP/SMZ resistant,
n = 1,127
E. coli phylogenetic group
A 345 (15.6) 141 (13.0) 204 (18.1) 0.001
B1 223 (10.1) 121 (11.2) 102 (9.1)
B2 1,071 (48.5) 633 (58.4) 438 (38.9) <0.001
D 571 (25.8) 188 (17.4) 383 (34.0) <0.001
Clonal group A 144 (6.5) 30 (2.8) 114 (10.1) <0.001

*TMP/SMZ, trimethoprim/sulfamethoxazole.
†p values, by Fisher exact test, for TMP/SMZ-susceptible vs. -resistant isolates are shown where p<0.05; otherwise, p>0.10.

*TMP/SMZ, trimethoprim/sulfamethoxazole.
†p values, by Fisher exact test, for TMP/SMZ-susceptible vs. -resistant isolates are shown where p<0.05; otherwise, p>0.10.

*TMP/SMZ, trimethoprim/sulfamethoxazole.
†p values, by Fisher exact test, for TMP/SMZ-susceptible vs. -resistant isolates are shown where p<0.05; otherwise, p>0.10.

Main Article

1Investigators who contributed data are listed at the end of this article.

Page created: October 21, 2011
Page updated: October 21, 2011
Page reviewed: October 21, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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