We transfer seriously ill children to Europe for surgery. Tdh is the European leader in medical evacuations and organises 40% of these transfers. Post-operative medical follow-up is provided and the children are supported in their reintegration into school. We organise surgical missions to Dakar with specialists from the CHUV in Lausanne. Their aim is to examine, treat and operate on the children in their country of origin, while reinforcing the skills of the local staff. La Chaîne de l'Espoir has set up a paediatric heart surgery centre at the Fann University Hospital in Dakar. This increases the number of children operated in their country. Theoretical and practical courses are given in Senegal in the Master's course in paediatric cardiac surgery resuscitation.