Rates of invasive Group A strep are four times higher than usual among children aged one to four, official figures for England show.
There have been seven deaths of children under 13 in the UK in recent weeks. Parents concerned about a seriously ill child should seek medical advice, the UK Health Security Agency (UKHSA) has said.
The invasive condition is caused by a bacteria called group A streptococci, which usually causes mild illnesses such as strep throat and scarlet fever. In very rare occasions, the bacteria can get into the bloodstream and cause invasive Group A strep (iGAS).
Six children aged under 13 Strep A outbreak: Seventh child dies after contracting scarlet fever - what are the symptoms to look out for?">have died in England, with one death of a child in Wales. No deaths have been reported in either Scotland or Northern Ireland.
Yorkshire and the Humber has England’s highest rates of iGAS in the most recent 10-week period, whilst the North East, North West and South East also have rates above the England average.
Dr Colin Brown, deputy director of the UKHSA, said: “We are seeing a higher number of cases of Group A strep this year than usual. The bacteria usually causes a mild infection producing sore throats or scarlet fever that can be easily treated with antibiotics. In very rare circumstances, this bacteria can get into the bloodstream and cause serious illness – called invasive Group A strep.
“This is still uncommon; however, it is important that parents are on the lookout for symptoms and see a doctor as quickly as possible so that their child can be treated and we can stop the infection becoming serious. Make sure you talk to a health professional if your child is showing signs of deteriorating after a bout of scarlet fever, a sore throat, or a respiratory infection.”
Across England, infection rates have risen most dramatically among children aged one to four, with 2.3 cases per 100,000 - four times higher than the average rates in the three years to March 2020, before the coronavirus pandemic. And infection rates among children aged five to nine have tripled compared to this three-year average.
Health officials are investigating the rise but say there is currently no evidence that a new strain is circulating. Below you can explore infection rates across the UK, and see how the North East ranks compared to other regions.

1. East of England - 0.6
There are 39 cases of Invasive Group A Strep in the East of England, 0.6 cases per 100,000 population. | Uwalthie Pic Project - stock.ado Photo: Uwalthie Pic Project - stock.ado

2. Nottingham - 0.8
There are 40 cases of Invasive Group A Strep in the East Midlands, 0.8 cases per 100,000 population. | dietrichherlan - stock.adobe.com Photo: dietrichherlan - stock.adobe.com

3. London - 0.8
There are 71 cases of Invasive Group A Strep in London, 0.8 cases per 100,000 population. | Dario - stock.adobe.com Photo: Dario - stock.adobe.com

4. South West - 0.9
There are 49 cases of Invasive Group A Strep in the South West, 0.9 cases per 100,000 population. | Adobe Stock Photo: Adobe Stock