How common are streptococcal infections?
Non-invasive GAS infections are common. It is hard to get a precise figure because most infections are mild, and many people do not report their symptoms to their GP. One estimate is that one in every four sore throats is caused by a GAS infection. Invasive GAS infections are rare. In England it is estimated that each year three out of every 100,000 people will have an invasive infection GBS infections in newborns are uncommon. It is estimated that one out of every 2000 babies born in England will develop a GAB infection.
