Large outbreaks of scarlet fever caused by emm12 group A Streptococcus (GAS) occurred in China in 2011. Since then, scarlet fever has been epidemic annually, but there are no continuous surveillance d
A sudden increase in invasive Group A Streptococcus (iGAS) infections associated with emm/M3 isolates during the winter of 2008/09 prompted the initiation of enhanced surveillance in England. In order
Bacteria respond to environmental changes through the co-ordinated regulation of gene expression, often mediated by two-component regulatory systems (TCS). Group A Streptococcus (GAS), a bacterium whi