But better than the standard form of pancreatic cancer, which has a 98% mortality rate over five years.

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According to Mr Demombynes and Karina Trommlerova, also of the World Bank, 16 of the 20 African countries which have had detailed surveys of living conditions since 2005 reported falls in their child-mortality rates (this rate is the number of deaths of children under five per 1, 000 live births).

ECONOMIST: African child mortality