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Ten leading aid agencies are today calling for a 'surge' in the humanitarian effort to help 10 million people at risk of acute hunger across the Sahel region of West and Central Africa.
The centre of the crisis is Niger, where 7 million people, almost half the population do not have enough food.
Hundreds of thousands more people are affected in Chad, Mali, Mauritania, parts of Burkina Faso and the far north of Nigeria.
Caroline Gluck of Oxfam has recently returned from Niger, she described the situation.
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