The UN refugee agency warned on Monday that a spike in refugees arriving in South Sudan after weeks of deadly fighting along the disputed frontier with Sudan was deepening a humanitarian crisis.

About 35 000 refugees have arrived in the Upper Nile State in the past three weeks on foot from Sudan''s Blue Nile State, joining the 70 000-strong refugee population already there.
"We need help urgently," said MSF emergency co-ordinator Patrick Swartenbroex, who said that despite providing up to 90 000 litres of water a day, the wells were likely to dry up by the end of the week.

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