Men carry an extremely sick girl to the only medical center in the Yida refugee camp in Unity State, South Sudan on Saturday, May 12, 2012. With more than 30,000 residents, many of whom are undernourished, the few international aid organizations operating in Yida struggle to provide sufficient services. In recent weeks, aid agencies have reported a steep influx of new arrivals, at times exceeding 700 per day. Most arrive in need of food, medical treatment and other basic services. (AP Photo/Pete Muller)

Associated Press
Men carry an extremely sick girl to the only medical center in the Yida refugee camp in Unity State, South Sudan on Saturday, May 12, 2012. With more than 30,000 residents, many of whom are undernourished, the few international aid organizations operating in Yida struggle to provide sufficient services. In recent weeks, aid agencies have reported a steep influx of new arrivals, at times exceeding 700 per day. Most arrive in need of food, medical treatment and other basic services. (AP Photo/Pete Muller)
Men carry an extremely sick girl to the only medical center in the Yida refugee camp in Unity State, South Sudan on Saturday, May 12, 2012. With more than 30,000 residents, many of whom are undernourished, the few international aid organizations operating in Yida struggle to provide sufficient services. In recent weeks, aid agencies have reported a steep influx of new arrivals, at times exceeding 700 per day. Most arrive in need of food, medical treatment and other basic services. (AP Photo/Pete Muller)
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