Médecins Sans Frontières, MSF is calling on all warring parties in South Sudan to observe civilian right to access emergency healthcare, clean water and food.
MSF urges the warring parties to guarantee safety for its medical facilities; staff and vehicles.
Recent fighting in and around Malakal and Wau Shilluk has left many cut off from healthcare, says the medical agency in a statement.
20,500 people in Wau Shilluk fled to the bush in January when warring parties exchanged artillery fire across the Nile, MSF says.
MSF says Wau Shilluk market was hit by mortar fire, forcing the town population to evacuate.
Medical facilities are also at risk, MSF discloses.
MSF says one shell landed close to its clinic in Malakal town, located on the opposite side of the Nile from Wau Shilluk.
Respect the protected status of medical facilities to ensure all displaced populations have access to care, the agency appeals to the warring parties in South Sudan.