[:en]Strategic Advisory Group of Experts on Immunizaiton in Geneva.
SAGE is the principal advisory group to WHO for vaccines and immunization. It is charged with advising WHO on overall global policies and strategies, ranging from vaccines and technology, research and development, to delivery of immunization and its linkages with other health interventions. SAGE is concerned not just with childhood vaccines and immunization, but all vaccine-preventable diseases.
http://www.who.int/immunization/policy/sage/en/[:]