"Many specific challenges in the DRC compound the already difficult task of vaccine delivery. Years of internal conflict have displaced millions from their homes, limiting their access to preventive health services. The country has an estimated population of 87 million, of which more than half are children. About two thirds live in rural areas and 40% of mothers report distance to health facilities as a challenge when getting health care. In addition, inherent mistrust of government-run programmes prevents some from seeking care. Those who do are met by health-care workers who want to help, but are hampered by stock outages or unstable refrigeration necessary to store vaccines in the prescribed temperature range. Many are understaffed or simply don’t have sufficient vaccines available due to the fragility of cold-storage and supply chain in remote areas."