Group A Streptococcal Disease, Invasive (iGAS)

Group A Streptococcus (GAS) disease is caused by bacteria that spread person-to-person through direct contact with nose, throat or wound secretions or respiratory droplets. Some people carry the bacteria in the throat or on the skin with no symptoms or have mild illness. In rare cases, it becomes “invasive”, or iGAS, when bacteria enter the blood or deep tissue. This can result in severe life-threatening illness.