One Health Units for Humans, Environment, Animals and Livelihoods (HEAL) Transmission of diseases between humans and animals are frequent in pastoralist societies ofSomalia, Ethiopia and Northern Kenya and related to environmental conditions. The HEAL projectpromotes sustainable rangeland management and access to integrated human/livestock healthservices. Thereby, it contributes to improved health, to reduced vulnerability among pastoralistcommunities and to prevention of their displacement/migration, which is in the interest of Switzerland.