Five informants were Van YYU hospital staff. They were the Director of the University Hospital, the chief of nursing staff, two specialists and one health officer. The infectious disease specialist is on duty in the infectious disease control committee of YYU Hospital, who was a counselor in the Van Crisis Coordination Committee (CCC) and communicated with WHO representatives for the outbreak control. One internal medicine specialist who was also a native of Dogubeyazit helped the Provincial Health Directorates and WHO representatives to communicate with families from Dogubeyazit. The health officer was assigned to the emergency services during the outbreak and he was also the representative of the Health Workers Union in Van.