On average, 2,400 new cases of acute leukaemia are diagnosed every year in England and Wales. About 85 per cent of cases of acute lymphoblastic leukaemia (ALL) occur in children under 15 years of age, with the majority of cases developing in children ag

* On average, 2,400 new cases of acute leukaemia are diagnosed every year in England and Wales.

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About 85 per cent of cases of acute lymphoblastic leukaemia (ALL) occur in children under 15 years of age, with the majority of cases developing in children aged between two and five.

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Approximately one in every 2,000 children will develop ALL.

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Almost all children will achieve a remission from symptoms, and 80 per cent will make a complete recovery.