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Journal of Clinical Microbiology, Aug 1997, 2055-2060, Vol 35, No. 8
Copyright © 1997 by the American Society for Microbiology. All rights reserved.

Genotypic analysis of Burkholderia cepacia isolates from 13 French cystic fibrosis centers

C Segonds, E Bingen, G Couetdic, S Mathy, N Brahimi, N Marty, P Plesiat, Y Michel-Briand and G Chabanon
Laboratoire de Bacteriologie-Virologie-Hygiene, CHU Rangueil, Toulouse, France.

Burkholderia cepacia has been involved in outbreaks of pulmonary infection among patients with cystic fibrosis (CF), and the spread of a highly transmissible clone has been reported throughout the United Kingdom and Canada. These data prompted a DNA-based typing study of the strains recovered in French CF centers. Ninety-five isolates recovered from 71 patients attending 13 CF centers in 9 regions of France were characterized by randomly amplified polymorphic DNA (RAPD) analysis and pulsed-field gel electrophoresis (PFGE). Twenty-one genotypes were identified among the 95 isolates, and the results of RAPD and PFGE were concordant for 89 isolates (94%). Cross-colonization was demonstrated in 7 of the 13 CF centers. The investigation of serial isolates showed that most chronically colonized patients harbored a single B. cepacia strain. A geographically clustered distribution of B. cepacia genotypes was observed, except for one genotype, which was detected in four regions but was proven to be different from the genotype of the British- Canadian highly transmissible strain. The present study confirms the ability of B. cepacia to spread among CF communities in France and the importance of epidemiological surveys in the institution of prevention policies.

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