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Journal of Clinical Microbiology, Jul 1995, 1716-1719, Vol 33, No. 7
Copyright © 1995 by the American Society for Microbiology. All rights reserved.

Use of amplified fragment length polymorphism in molecular typing of Legionella pneumophila and application to epidemiological studies

C Valsangiacomo, F Baggi, V Gaia, T Balmelli, R Peduzzi and JC Piffaretti
Istituto Cantonale Batteriosierologico, Lugano, Switzerland.

A novel method for molecular typing of organisms, amplified fragment length polymorphism analysis, was tested for its suitability in epidemiological studies in medical microbiology. Amplified fragment length polymorphism analysis, originally developed for typing crop plants, consists of a simple restriction-ligation reaction and a subsequent PCR amplification. In a single-step reaction, the genomic DNA is digested and the restriction fragments are ligated to specially constructed adapters. PCR amplification of such tagged restriction fragments with primers complementary to the adapters allows the detection of restriction fragment length polymorphisms upon resolution on agarose gels. The method is fast, efficient, and reproducible for typing strains of Legionella pneumophila isolated from both humans and the environment. The accuracy of the method was tested by comparison with standard restriction fragment length polymorphism typing performed with both a ribosomal and a genomic probe.


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Copyright © 1995 by the American Society for Microbiology. All rights reserved.