GPs are said to be terrified of missing signs of Strep A infection in children after a spate of deaths.
At least six children under 10 have died from a rare form of invasive Strep A since September, with a nursery-age lad from Ealing, West London, among the latest victims.
A 12-year-old secondary school pupil in Lewisham, South East London, is feared to be the seventh to die.
