A paediatrician by background, Emilie Macher did her first mission in the field with Médecins sans Frontières (MSF, Doctors without Borders) in 2009, in Burkina Faso and South Sudan. This was the beginning of a life-long commitment to the humanitarian work, and Global Health. First focusing on hospital paediatric care and the management of acute malnutrition, she progressively shifted towards topics related to emergency preparedness, outbreaks response, and vaccination in emergencies. Working in the medical and operations' departments of MSF Geneva between 2017 and 2020, she was involved in the diphtheria outbreak response for Ibb Governorate, Yemen, and contributed to the MSF movement's reflection and collaboration on diphtheria case management. She currently works in the COVID-19 crisis cell of the Health Department, Geneva State.