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Volume 18, Number 8—August 2012

Dispatch

Escherichia coli O104 Associated with Human Diarrhea, South Africa, 2004–2011

Nomsa P. TauComments to Author , Parastu Meidany, Anthony M. Smith, Arvinda Sooka, Karen H. Keddy, and for the Group for Enteric, Respiratory, and Meningeal Disease Surveillance in South Africa
Author affiliations: National Health Laboratory Services, Johannesburg, South Africa (N.P. Tau, A.M. Smith, A. Sooka, K.H. Keddy); University of the Witwatersrand, Johannesburg (P. Meidany, A.M. Smith, K.H. Keddy)

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Table 2

Escherichia coli O104 strains associated with human diarrhea, South Africa, 2004–2011*

Strain no. Collection date Province Patient age/sex E. coli pathotype H antigen Antimicrobial drug susceptibility†
1 2007 Feb 23 Eastern Cape 4 mo/F EAggEC H4 RAmp SAmc RSxt SChl SNal SCip RTet SKan SStr SImi SCro SCaz
2 2007 Nov 16 Mpumalanga 43 y/M EAggEC H4 RAmp SAmc RSxt SChl SNal SCip RTet SKan RStr SImi SCro SCaz
3 2009 Apr 12 Gauteng 10 mo/F EPEC Non-H4 SAmp SAmc SSxt SChl SNal SCip STet SKan SStr SImi SCro SCaz
4 2010 Feb 24 Mpumalanga 7 mo/M EAggEC H4 RAmp SAmc RSxt SChl SNal SCip STet SKan SStr SImi SCro SCaz
5 2010 Mar 3 North West 7 mo/F EAggEC H4 RAmp SAmc RSxt SChl SNal SCip RTet SKan SStr SImi SCro SCaz
6 2010 Jun 16 Gauteng 12 mo/M EAggEC H4 RAmp SAmc RSxt SChl SNal SCip STet SKan RStr SImi SCro SCaz
7 2010 Jul 17 Gauteng 15 mo/F EPEC Non-H4 SAmp SAmc SSxt SChl SNal SCip STet SKan SStr SImi SCro SCaz

*EaggEC, enteroaggregative E. coli; EPEC, enteropathogenic E. coli.
†R, resistant; S, susceptible. Isolates were classified as antimicrobial drug resistant at the following MIC breakpoint concentrations: ampicillin (Amp), MIC >16 μg/mL; amoxicillin/clavulanic acid (Amc), MIC >16 μg/mL; sulfamethoxazole/trimethoprim (Sxt), MIC >4 μg/mL; chloramphenicol (Chl), MIC >16 μg/mL; nalidixic acid (Nal), MIC >32 μg/mL; ciprofloxacin (Cip), MIC >2 μg/mL; tetracycline (Tet), MIC >8 μg/mL; kanamycin (Kan), MIC >32 μg/mL; streptomycin (Str), MIC >64 μg/mL; imipenem (Imi), MIC >8 μg/ml; ceftriaxone (Cro), MIC >16 μg/mL; ceftazidime (Caz), MIC >16 μg/mL.

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