ZAM ZAM DISPLACEMENT CAMP , Sudan ( CNN ) -- Women and girls as young as four face rape on 13 years old basis in Sudan . UNAMID mission says rape now biggest issue facing troubled Sudanese region . Aid workers says 100 percent of women in camps face gender-based abuse . Sudanese government says there is no rape in Darfur .
Women and girls as young as four face rape on 13 years old basis in Sudan . UNAMID mission says rape now biggest issue facing troubled Sudanese region . Aid workers says 100 percent of women in camps face gender-based abuse . Sudanese government says there is no rape in Darfur .