Paula Bronstein / Getty Images

A Sudanese family rests along a road they have been walking for the past three days, on July 6, 2012 along the border road inside South Sudan. Many refugees have been walking for 4 to 5 days from inside Sudan to get to Yida refugee camp from the Nuba mountain region where they have no food and are fleeing the on-going conflict.

Paula Bronstein / Getty Images

People wait in line for hours to receive medical treatment at the CARE medical clinic at the Yida refugee camp on July 5, 2012 in Yida, South Sudan.

Paula Bronstein / Getty Images

A Sudanese woman sits outside her hut on a rainy afternoon at the Yida refugee camp on July 5, 2012.

Paula Bronstein / Getty Images

Bolis Jamal, 3, stands near his temporary shelter suffering from malnutrition at the Yida refugee camp on July 1, 2012.

Refugees in South Sudan are facing a nutrition and disease crisis as conflict and hunger in the neighboring Blue Nile State of Sudan continue to drive people across the border.

See more of Paula Bronstein's images of the Yida refugee camp, which has a swelling population of over 60,000 people.

Jonathan Miller has spent the last week in Jamam, another camp nearby, and reports below on the looming health disaster which many blame on the United Nations' failure to act sooner. 

Channel 4 News: Sudanese refugees tell of their flight from persecution

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Paula Bronstein / Getty Images

A girl is measured at a field hospital for malnourished children at the Yida refugee camp along the border with North Sudan on July 4 in Yida, South Sudan.

Paula Bronstein / Getty Images

A girl's arm is measured at a field hospital for malnourished children at the Yida refugee camp on July 4 in Yida, South Sudan.

Getty Images reports: Yida refugee camp in South Sudan grows each day and now has swollen to 64,317, as the refugees continue to flee from South Kordofan in North Sudan. The numbers of refugees arriving from North Sudan vary from 500 to 1,000 a day.

Many new arrivals walked from 3 to 5 days to reach the camp without food. The rainy season has increased the numbers suffering from diarrhea and severe malnutrition and 95% of the field hospitals' patients are children under the age of five.

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Paula Bronstein / Getty Images

New arrivals crowd together living in makeshift shelter at the Yida refugee camp along the border with North Sudan.

• Sudan opposition calls for strikes, protests
  

Paula Bronstein / Getty Images

Sudanese girls jump rope as many look on at the Yida refugee camp along the border with North Sudan June 30, 2012 in Yida, South Sudan.

Paula Bronstein / Getty Images

New arrivals wait in long lines to register with UNHCR at the Yida refugee camp along the border with North Sudan, June 30, in Yida, South Sudan.

Water has been a precious resource with which aid agencies have struggled. Yida refugee camp has swollen to nearly 60,000, as the refugees flee from South Kordofan in North Sudan with new arrivals at 300-600 a day.  The rainy season has increased the numbers of sick children suffering from diarrhea and severe malnutrition as the international aid community struggles to provide basic assistance to the growing population, as most have arrived with only the clothes they are wearing. Many new arrivals walked from 5 days up to 2 weeks or more to reach the camp.

Related story: Sudan agrees to allow aid in rebel-held border areas
Related story: ‘Lost Boys’ peril returns in Sudan

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