In February 2014, WHO categorized South Sudan's health crisis as a "Grade 3," the highest level of humanitarian emergency.
According to WHO, since August more than 10, 000 people have arrived to the Malakal protection-of-civilians site in Upper Nile State, stemming from a month-long aid blockade to the region.
The influx brought the total number of asylum seekers in the site to 46,567, with families crammed together with little or no access to safe water or sanitation.
By Ruchi Singh