Article
Characterization of emm types and superantigens of Streptococcus pyogenes isolates from children during two sampling periods.
Epidemiology and infection - 1 Oct 2009
Ma Y, Yang Y, Huang M, Wang Y, Chen Y, Deng L, Yu S, Deng Q, Zhang H, Wang C, Liu L, Shen X
Abstract excerpt
The characteristics of 359 group A streptococcal (GAS) isolates collected from Chinese paediatric patients in two periods (1993-1994, 2005-2006) were studied. Isolates were assigned to emm types and assayed for eight superantigen (SAg) genes (speA, speC, speH, speI, speG, speJ, ssa, SMEZ). Types emm1 and emm12 were consistently the most prevalent during the two periods, while others varied in frequency. GAS...
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