The program, called ADVocacy for IMmunization (ADVIM), is a collaborative effort involving the World Health Organization (WHO), the United Nations Children's Fund (UNICEF), and local finance, health, and planning ministries. ADVIM's advocacy platform will be developed by AMP and members of the EPIVAC international network, a group of 400 health professionals involved in immunization in 11 sub-Saharan African countries. The participating countries will be selected among those meeting the requirements for GAVI Alliance funding.