Food aid in South Sudan has started arriving in parts of the country affected by famine. The World Food Program (WFP) is delivering urgent assistance to tens of thousands of people in Leer County.

“We will go every 4 to 6 weeks, much more frequently than ever but we will also not only provide food and nutrition assistance we will go along with other agencies to ensure that we have an integrated approach,” said Joyce Luma, WFP's country director in South Sudan.

The teams have been on the ground in three different locations affected by famine. In one region, 36,000 people had been in hiding on nearby islands. They've received food, medical care and nutritional treatment.

Aid agencies say more than 40 percent of South Sudan's population is in need of urgent assistance.