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Journal of Clinical Microbiology, February 2005, p. 802-807, Vol. 43, No. 2
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.2.802-807.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Six-Month Multicenter Study on Invasive Infections Due to Streptococcus pyogenes and Streptococcus dysgalactiae subsp. equisimilis in Argentina

Horacio A. Lopardo,1* Patricia Vidal,1 Monica Sparo,2 Paola Jeric,3 Daniela Centron,3 Richard R. Facklam,4 Hugo Paganini,5 N. Gaston Pagniez,6 Marguerite Lovgren,7 Bernard Beall,4 and the Argentinian Streptococcus Study Group{dagger}

Servicio de Microbiología,1 Servicio de Epidemiología, Infectología y Medicina Preventiva, Hospital de Pediatría "Prof. Dr. Juan P. Garrahan,",5 Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires,3 Hospital Ramón Santamarina, Tandil,2 Hospital Pirovano, Tres Arroyos, Argentina,6 Division of Bacterial and Mycotic Diseases, Respiratory Diseases Branch, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia,4 National Centre for Streptococcus, Provincial Laboratory of Public Health, University of Alberta Hospital Edmonton, Alberta, Canada7

Received 19 May 2004/ Returned for modification 5 July 2004/ Accepted 5 September 2004

During a 6-month period, 95 invasive infections due to Streptococcus pyogenes and group C or group G Streptococcus dysgalactiae subsp. equisimilis were recorded from 40 centers of 16 cities in Argentina. We describe here epidemiologic data available for 55 and 19 patients, respectively, associated with invasive infections due to S. pyogenes and S. dysgalactiae subsp. equisimilis. The associated isolates and 58 additional pharyngeal isolates were genotyped and subjected to serologic and/or antibiotic susceptibility testing. Group A streptococcal emm type distribution and strain association with toxic shock appeared to differ somewhat from results found within the United States; however, serologic characterization and sof sequence typing suggested that emm types found in both countries are reflective of shared clonal types.

* Corresponding author. Mailing address: Microbiología. Hospital de Pediatría "Prof. Dr. Juan P. Garrahan," Combate de los Pozos 1881. (1245) Buenos Aires, Argentina. Phone: 54 11 4308 4300. Fax: 54 11 4308 5325. E-mail: hlopardo{at}garrahan.gov.ar.

{dagger} Contributing members of the Argentinian Streptococcus Study Group are listed in Acknowledgments.

Journal of Clinical Microbiology, February 2005, p. 802-807, Vol. 43, No. 2
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.2.802-807.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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