This news story has been in the press, on the radio/TV this week because Sam, the son of friends of ours, died of sepsis. He shouldn't have.
Chatting to other friends, it seems as though very many people have never heard of sepsis although most are aware of the symptoms of meningitis. One of the reasons the Morrish family have gone public with their experience is to raise awareness of sepsis; Sam wouldn't have died if he'd received antibiotics.
The Sepsis Trust has lots of information, including this symptoms checklist.