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Infection and Immunity, January 2001, p. 584-588, Vol. 69, No. 1
0019-9567/01/$04.00+0   DOI: 10.1128/IAI.69.1.584-588.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Genetic Diversity of Pseudomonas aeruginosa Strains Isolated from Ventilated Patients with Nosocomial Pneumonia, Cancer Patients with Bacteremia, and Environmental Water

Raymond Ruimy,1 Emmanuel Genauzeau,1 Christian Barnabe,2 Arnaud Beaulieu,1 Michel Tibayrenc,2 and Antoine Andremont1,*,dagger for the P. aeruginosa Study Group

EPI INSERM 9933, Epidémiologie de la Résistance aux Anti-infectieux, Groupe Hospitalier Bichat-Claude Bernard, Assistance Publique Hôpitaux de Paris 75018 Paris,1 and Centre d'Etudes sur le Polymorphisme des Microorganismes (CEPM), UMR CNRS/IRD 9926, IRD, Montpellier,2 France

Received 18 July 2000/Returned for modification 12 September 2000/Accepted 23 October 2000

Random amplified polymorphic DNA typing was used to study the genetic diversity of Pseudomonas aeruginosa strains from (i) ventilated patients with nosocomial pneumonia who were hospitalized in intensive care units, (ii) cases of bacteremia in cancer patients with severe neutropenia, and (iii) rivers and swimming pools. Genetic diversity was determined by three phylogenetic methods and by statistical analysis of population genetics. The population studied undergoes epidemic clonality with a high rate of genetic recombination. P. aeruginosa bacteremia and pneumonia are not caused by specific clones within this species.

* Corresponding author. Mailing address: Laboratoire de Bactériologie, Groupe Hospitalier Bichat-Claude Bernard, 46 rue Henri Huchard, 75877 Paris Cedex 18, France. Phone: (33) 1 40 25 85 00. Fax: (33) 1 40 25 85 81. E-mail: antoine.andremont{at}bch.ap-hop-paris.fr.

dagger Other members of The P. aeruginosa Study Group include Marie-Hélène Nicolas-Chanoine, Hervé Richet, Jean Pierre Flandrois, Brigitte Mulin, Francis Megraud, Philippe Lagrange, Elisabeth Chachaty, Cyrille Tancrède, Mylène Bernos, Jean Chastre, Jean Louis Trouillet, Claude Gibert, Michel Wolff, Bernard Regnier, and François Vachon.

Infection and Immunity, January 2001, p. 584-588, Vol. 69, No. 1
0019-9567/01/$04.00+0   DOI: 10.1128/IAI.69.1.584-588.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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