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Journal of Clinical Microbiology, June 2007, p. 2044-2047, Vol. 45, No. 6
0095-1137/07/$08.00+0     doi:10.1128/JCM.00496-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Nonoutbreak Surveillance of Group A Streptococci Causing Invasive Disease in Portugal Identified Internationally Disseminated Clones among Members of a Genetically Heterogeneous Population

Instituto de Microbiologia, Instituto de Medicina Molecular, Faculdade Medicina, Universidade de Lisboa, Lisboa, Portugal

Received 6 March 2007/ Accepted 12 April 2007

The typing of 160 invasive Streptococcus pyogenes isolates confirmed the importance of pulsed-field gel electrophoresis and multilocus sequence typing for defining clones. The results identified an extremely diverse population and highlighted the importance of both internationally disseminated and local clones not previously associated with invasive disease.

Published ahead of print on 25 April 2007.