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. 2008 Jun;14(6):954-7.
doi: 10.3201/eid1406.071168.

Ceftriaxone-resistant salmonella enterica serotype Newport, France

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Ceftriaxone-resistant salmonella enterica serotype Newport, France

Svetlana Egorova et al. Emerg Infect Dis. 2008 Jun.

Abstract

The multidrug-resistant (MDR) Salmonella enterica serotype Newport strain that produces CMY-2 beta-lactamase (Newport MDR-AmpC) was the source of sporadic cases and outbreaks in humans in France during 2000-2005. Because this strain was not detected in food animals, it was most likely introduced into France through imported food products.

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Figures

Figure 1
Figure 1
Representative XbaI pulsed-field gel electrophoresis (PFGE) profiles of third-generation cephalosporin–resistant Salmonella Newport isolates studied. A dendrogram was generated with Bionumerics software (Applied Maths, Sint-Martens-Latem, Belgium). The PFGE profile (and if there were indistinguishable isolates in the PulseNet USA database [www.cdc.gov/pulsenet], the corresponding Centers for Disease Control and Prevention PulseNet profile), the number of isolates, and the β-lactamase genes are indicated.
Figure 2
Figure 2
Representative PstI restriction profiles (A) and blaCMY-2 Southern hybridization (B) of plasmids from Escherichia coli DH10B transformants of CMY-2–producing Salmonella spp. clinical isolates. Lane M, Raoul molecular mass marker (Qbiogene, Illkirch, France). Lane 1, DH10B/00-7490; lane 2, DH10B/03-3349; lane 3, DH10B/03-3367; lane 4, DH10B/00-3525; lane 5, DH10B/00-4165; lane 6, DH10B/03-9969; lane 7, DH10B/03-9243; lane 8, DH10B/02-2049. Values on the left of panel A are in kb. Restriction and hybridization profiles are indicated. The gel is focused on the resolution of high molecular mass bands; smaller bands (in particular, the 0.8-kb band) are not well visualized.

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