Seventy isolates of with extended-spectrum β-lactamases (ESBLs) were compared. These were isolated from 51 patients on 10 separate wards in one hospital over an 18-month period between 1992 and 1994. Antibiograms were determined and the isolates were typed by pulsed-field gel electrophoresis of their DNA digestion with I. The isolates were compared to three genotypically different epidemic strains responsible for previous outbreaks at the hospital between 1988 and 1991. Isolates from 84% of the present patients had closely related 1 patterns, and most (74%) produced an ESBL with an iso-electric point (pI) of 7.0. A similar pattern was found for one of the previous epidemic strains, but it produced an ESBL with a pI of 7.8; isolates with this latter enzyme variant were found only in six of the present patients. The two other previous epidemic strains had ESBLs with a pI of 6.3 and organisms related to them were found in one and two of the present patients, respectively.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error