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Journal of Clinical Microbiology, January 2003, p. 456-459, Vol. 41, No. 1
0095-1137/03/$08.00+0     DOI: 10.1128/JCM.41.1.456-459.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Prevalence of agr Specificity Groups among Staphylococcus aureus Strains Colonizing Children and Their Guardians

B. Shopsin,1 B. Mathema,2 P. Alcabes,3 B. Said-Salim,2 G. Lina,4 A. Matsuka,2 J. Martinez,2 and B. N. Kreiswirth2*

Department of Medicine, New York University School of Medicine, New York, New York 10016,1 Public Health Research Institute Tuberculosis Center, Newark, New Jersey 07103,2 School of Health Sciences, Hunter College of the City University of New York, New York, New York 10010,3 Centre National de Référence des Toxémies à Staphylocoques, INSERM E0230, Faculté de Médecine Laennec, 69372 Lyon Cedex 08, France4

Received 15 May 2002/ Returned for modification 7 August 2002/ Accepted 5 October 2002

PCR-based assays were used to evaluate agr locus nucleotide polymorphism for the identification of agr autoinducer receptor specificity groups within a population of Staphylococcus aureus isolates colonizing children and their guardians. All isolates could be assigned to one of three major agr groups that had similar prevalences, regardless of whether isolates were implicated in transmission of S. aureus within families. Among healthy carriers, agr groups I to III appear to be equally fit, which may reflect selection for the coexistence of S. aureus strains in a population.

* Corresponding author. Mailing address: PHRI TB Center, 225 Warren St., Newark, NJ 07103. Phone: (973) 854-3240. Fax: (973) 854-3241. E-mail: barry{at}phri.org.

Journal of Clinical Microbiology, January 2003, p. 456-459, Vol. 41, No. 1
0095-1137/03/$08.00+0     DOI: 10.1128/JCM.41.1.456-459.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



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