South Sudan, March 2 -- Doctors Without Borders/Medecins Sans Frontieres (MSF) is deeply concerned for the safety and wellbeing of its staff from Lankien and Pieri, in South Sudan's Jonglei state, following an escalation of violence since December that caused many people to flee.

On February 3, the MSF hospital in Lankien was hit in an airstrike by the government of South Sudan's forces, and later burned and looted, and MSF's health facility in Pieri was looted by unknown assailants. MSF had already evacuated the Lankien hospital due to reports of a possible attack, and staff members from Lankien and Pieri fled with members of the community.

MSF has sought to confirm the whereabouts and safety of all of its staff, but 26 of 291 of our c...