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Volume 15, Number 12—December 2009
Dispatch

CTX-M β-Lactamase Production and Virulence of Escherichia coli K1

Damien Dubois, Nemani V. Prasadarao, Rahul Mittal, Laurent Bret, Marie Roujou-Gris, and Richard BonnetComments to Author 
Author affiliations: University of Auvergne, Clermont-Ferrand, France (D. Dubois, R. Bonnet); Teaching Hospital, Clermont-Ferrand (D. Dubois, R. Bonnet); Childrens Hospital, Los Angeles, California, USA (N.V. Prasadarao, R. Mittal); University of Southern California, Los Angeles (N.V. Prasadarao); La Source Hospital, Orléans, France (L. Bret, M. Roujou-Gris)

Main Article

Table 1

Virulence factors of Orl-1 Escherichia coli K1 strain, France

Integrative elements* (1) Virulence genes Present
PAI III536–like iroN Yes
sfa/foc
 Yes
GimA-like
 ibeA (gimA4), ptnC (gimA1)
 Yes
PAI IIJ96–like hra Yes
hlyC, cnf1
 No
PAI ICFT073–like hlyC No
aer (iucC)
 Yes
HPI-like
 fyuA, irp-2
 Yes
GimB-like
 gimB
 Yes
pks island†
 clbA, clbK-J, clbP, clbQ
 Yes
Others chuA Yes
ompA Yes
hek Yes
iss Yes
malX Yes
cdtB-I to -V No

*PAI, pathogenicity island; HPI, high-pathogenicity island.
†Positive cytopathogen effect with transient infection of HeLa cells.

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