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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.

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