US actress and Oxfam ambassador Kristin Davis (L) at the Daadab refugee camp in northern Kenya on July 11, 2011. Dadaab, the world's largest refugee camp, has seen an influx of 61,000 Somalis since the beginning of the year, 20,000 of them in the last two weeks. The refugee population there currently stands at 380,000. AFP HOTO / OXFAM / HO / ANDY HALL