The worsening crisis comes as farmers flee their lands in the Equatoria region - known as the breadbasket of South Sudan - due to insecurity and displacement, which has shrunk production and further inflated food prices that were already up by over 85 per cent.
Conflict has resulted in the displacement of 3.9 million people, including two million children, and many are fleeing to neighbouring countries like Uganda – where nearly one million South Sudanese have sought refuge and aid with an estimated 2,000 crossing the border each day.
A major cholera epidemic has also infected nearly 11,000 people and killed around 250, but it is feared thousands more may die if the disease – which can kill within hours if left untreated – continues to spread.
Concern Worldwide - which runs a major relief operation in South Sudan with just under 350 staff - said aid workers are responding, but need safer access to those most in need in areas affected by the ongoing civil war, has killed an estimated 10,000 people.
The aid agency’s Regional Director for the Horn of Africa, Carol Morgan, said: