As we mark World Refugee Day (20 June 2022), over 100 million people globally are forcibly displaced from their home—the highest number ever recorded, according to the United Nations Refugee Agency. The health impacts of this displacement are dire: millions of people exposed to violence, infectious disease, and exclusion from health care during often-treacherous journeys or in detention centers and refugee camps.

Here we bring you a selection of MSF research aimed at better understanding and meeting the medical needs of populations along their migration route. Some studies describe the physical and psychological wounds our teams witness among specific populations—from unaccompanied minors to people detained under inhumane conditions in Libya or rescued from drowning after risking everything in perilous Mediterranean Sea crossings. Others assess ways to improve models of care for refugees with chronic diseases like hypertension and diabetes, or for tackling infectious diseases such as diphtheria and hepatitis E in overcrowded, unhygienic camps.