At least 15 children have now died of Strep A, official figures show.
Strep A, a common and highly infectious bacterial infection, causes Strep throat or tonsillitis, as well as scarlet fever, impetigo and, in rare and severe cases, iGAS.
Official data from the UK Health Security Agency show that there have been 13 deaths in England in under-18s since the start of September, up from five last week.
One child in Wales and one in Northern Ireland are also known to have died of the bacterial infection. There have been no reported deaths in Scotland.
Five children under the age of five have died of iGAS in England, five between five and 10 years old and three between 10 and 14 years old.Strep A: 15 children across UK have died from infection
Strep A: 15 children across UK have died from infection