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Dissemination of carbapenemase-producing Enterobacteriaceae in France, 2012
Laurent Dortet1, Gaelle Cuzon, Patrice Nordmann
1INSERM U914 'Emerging Resistance to Antibiotics', Hôpital de Bicêtre, Assistance Publique/Hôpitaux de Paris, Faculté de Médecine Paris Sud, K.-Bicêtre, France.
Objectives:
Carbapenem-resistant Enterobacteriaceae isolates (n = 1485) were received at the French Associated National Reference Center for Antibiotic Resistance in 2012 and were characterized for their mechanism of resistance to carbapenems.
Methods:
Carbapenemase production was detected using the biochemical-based Carba NP test, based on the detection of in vitro hydrolysis of imipenem. All isolates with a positive Carba NP test result were characterized by PCR and sequencing.
Results:
Carbapenemase production was identified in 23.1% of the isolates. The main carbapenemase type identified was OXA-48 and derivatives (75.5%). An overseas source was clearly demonstrated for only 27.6% of the isolates.
Conclusions:
OXA-48 and derivatives are now the most prevalent carbapenemases in France, with a possible spread of these producers in the community.
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