Six-month multicenter study on invasive infections due to Streptococcus pyogenes and Streptococcus dysgalactiae subsp. equisimilis in Argentina.

HORACIO A. LOPARDO, PATRICIA VIDAL, MONICA SPARO, PAOLA JERIC, DANIELA CENTRON, RICHARD R. FACKLAM, HUGO PAGANINI N. GASTON PAGNIEZ, MARGUERITE LOVGREN,7 BERNARD BEALL, AND THE ARGENTINIAN STREPTOCOCCUS STUDY GROUP

JOURNAL OF CLINICAL MICROBIOLOGY

American Society for Microbiology

Lugar: Washington; Año: 2005 vol. 43 p. 802 - 807

0095-1137

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.