TABLE 1.

General characterization of the 119 CTX-M-producing E. coli strains studied (one per patient), characterized by hospitals, regions, and origin of isolates

Hospitala codeRegionOrigin and no. of isolatesTotal no. of isolates
Community acquired (n = 66)Nosocomial (n = 47)Unknown (n = 6)
PFGE profile (no. of strains)TotalPFGE profile (no. of strains)Total (ward)PFGE profile (no. of strains)Total
ANorth0009 (1)80009 (1)1 (internal medicine)9
0010 (7)
BSouth0009 (1)80010 (2)2 (emergency, internal medicine)10
0010 (5)
0012 (1)
0013 (1)
CNorth0010 (27)31b0010 (14)16b (cardiology, surgery, internal medicine, nephrology,c pneumology,c ICU, urology)47
0003 (1)c0018 (1)c
0005 (1)cND (1)c
0011 (1)
ND (1)c
DLisbon and Tagus Valley0002 (1)c8d0007 (1)9d (cardiology, surgery, internal medicine, orthopedics, pneumology, gastroenterology, observation)0014 (1)c118
0010 (7)0010 (7)
0016 (1)
ELisbon and Tagus Valley0001 (1)c80004 (1)9e (emergency, internal medicine, surgery, nephrology, ICU, pediatric, neurology)0006 (2)421
0006 (1)0006 (1)0010 (1)
0010 (6)0008 (1)0019 (1)f
0010 (4)
0017 (1)
0019 (1)
FLisbon and Tagus Valley0010 (1)1 (infectious diseases)1
GLisbon and Tagus Valley0010 (1)1 (internal medicine)1
HLisbon and Tagus Valley0010 (5)6 (surgery, internal medicine)0010 (1)17
0015 (1)
INorth0003 (1)c30010 (2)2 (internal medicine)5
0010 (1)
ND (1)
  • a All hospitals were general hospitals.

  • b Two more strains were collected from the same patient: both were noted as community acquired, whereas the first was nosocomial (from the urology ward).

  • c CTX-M-14 producers.

  • d Three more strains were collected from the same patient (two from internal medicine and one from the community).

  • e Two more strains were collected from the same patient, all noted as nosocomial (from the pediatric ward).

  • f CTX-M-32 producers. All other isolates were CTX-M-15 producers excepting those from CTX-M-14 producers.