title: Six-month multicenter study on invasive infections due to Streptococcus pyogenes and Streptococcus dysgalactiae subsp. equisimilis in Argentina.
abstract: 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.
authors.affiliation: Servicio de Microbiología. Hospital de Pediatría Prof. Dr. Juan P. Garrahan, Combate de los Pozos 1881. (1245) Buenos Aires, Argentina. hlopardo@garrahan.gov.ar
authors.forename: Horacio A
authors.initials: HA
authors.lastname: Lopardo
authors.forename: Patricia
authors.initials: P
authors.lastname: Vidal
authors.forename: Monica
authors.initials: M
authors.lastname: Sparo
authors.forename: Paola
authors.initials: P
authors.lastname: Jeric
authors.forename: Daniela
authors.initials: D
authors.lastname: Centron
authors.forename: Richard R
authors.initials: RR
authors.lastname: Facklam
authors.forename: Hugo
authors.initials: H
authors.lastname: Paganini
authors.forename: N Gaston
authors.initials: NG
authors.lastname: Pagniez
authors.forename: Marguerite
authors.initials: M
authors.lastname: Lovgren
authors.forename: Bernard
authors.initials: B
authors.lastname: Beall
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001118:Argentina / Q000453:epidemiology; D016470:Bacteremia / Q000453:epidemiology* / Q000382:microbiology; D002648:Child; D002675:Child, Preschool; D024881:Drug Resistance, Bacterial / Q000235:genetics; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D012703:Serotyping; D013290:Streptococcal Infections / Q000453:epidemiology* / Q000382:microbiology; D013291:Streptococcus / Q000145:classification* / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification; D013297:Streptococcus pyogenes / Q000145:classification* / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification
chemical_list: D000900:Anti-Bacterial Agents