简介：Ewan McGregor is on a mission to the ends of the earth to immunise some of the hardest-to-reach children in the world, following two vaccine trails, or 'cold chains', supported by Unicef
简介：Ewan McGregor is on a mission to the ends of the earth to immunise some of the hardest-to-reach children in the world, following two vaccine trails, or 'cold chains', supported by Unicef
