A1 Refereed original research article in a scientific journal

Distribution of emm types in invasive and non-invasive group A and G streptococci




AuthorsVähäkuopus Susanna, Vuento Risto, Siljander Tuula, Syrjänen Jaana, Vuopio Jaana

PublisherSpringer

Publication year2012

JournalEuropean Journal of Clinical Microbiology and Infectious Diseases

Journal name in sourceEuropean journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology

Journal acronymEur J Clin Microbiol Infect Dis

Volume31

Issue6

First page 1251

Last page6

Number of pages6

ISSN1435-4373

eISSN1435-4373

DOIhttps://doi.org/10.1007/s10096-011-1436-2


Abstract

Our study describes the emm type distributions of invasive and non-invasive group A streptococci (GAS) and group G streptococci (GGS) strains in one of the biggest Health Districts in Finland. A total of 571 GAS or GGS were recovered from patients with invasive or non-invasive infections during a 1-year period in 2008-2009 in Pirkanmaa Health District in Finland. We describe here the emm type distributions of GAS and GGS collected from throat (n = 246), pus (n = 217), deep tissue (n = 56) and blood (n = 52). The most common emm types among GAS were emm77, emm1, emm28, emm89 and emm12. Among GGS, the most common emm types were stG480, stG643, stG6, stC6979 and stG485. Some emm types were found to associate with certain infection focus. In GAS, emm77 associated with pus isolates, whereas emm1 and emm12 were more frequent among throat isolates. In GGS, stG480 was more commonly found from throat isolates.



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