Group A streptococci (Streptococcus pyogenes) cause a wide-range of disease in humans, from mild sore throats to life-threatening invasive disease such as necrotising fasciitis.
This bacterium is commonly found on the skin or throat where it can live without causing infection. Under particular circumstances however, this organism can cause disease.
Guidelines for prevention and control of group A streptococcal infection in acute healthcare and maternity settings in the UK (PDF, 1.4 MB)