Thousands flood world's largest refugee camp in Kenya

Refugees fleeing hunger in Somalia continue to arrive at Dadaab, the world's largest refugee camp, in neighbouring Kenya.

The United Nations High Commissioner for Refugees estimates that 1,300 to 1,500 refugees are crossing the border every day.

Somalia has been hit by 20 years of conflict and is also experiencing a famine, with nearly half the population in need of immediate food aid.

George Alagiah visited the Dadaab camp and sent this report.