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Updated: Oct 19, 2026

Assessment of Intestinal Transcytosis of Neonatal Escherichia coli Bacteremia Isolates
Published on: February 17, 2023
TEM-24 produced by four different species of Enterobacteriaceae, including Providencia rettgeri, in a single patient
H Marchandin1, C Carriere, D Sirot
1Service de Bactériologie, Hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France. h=marchandin@chu-montpellier.fr
Abstract:
Four species of members of the family Enterobacteriaceae harboring extended-spectrum beta-lactamase (ESBL) were recovered in a single patient hospitalized in an intensive care unit. Among these isolates, we describe for the first time an ESBL-producing Providencia rettgeri strain. Bacteria from the same species were shown to be genetically related by pulsed-field gel electrophoresis analysis. These strains produced the same TEM derivative ESBL, characterized as TEM-24. This enzyme had the peculiarity of being encoded by a large conjugative plasmid of 180 kb, never previously described for such an ESBL.
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