The group said Wednesday it treated 116 people with gunshot wounds during recent fighting in Malakal, the capital of Upper Nile, one of South Sudan's oil-producing states.
The group's Raphael Gorgeu said the fighting has limited the group's ability to reach people who have fled the fighting. The group is worried about the living conditions of hundreds of thousands of displaced people around the country.
Anti-government rebels have been fighting government troops around Malakal in recent days. Fighting broke out in Juba, the capital, December 15 over a political dispute between South Sudan's president and former vice president. Violence has since spread across the country.