“I arrive in Ghana today to see firsthand why the country’s immunization system is working so well and meet the people involved,” Bill Gates, co-chair of the Bill & Melinda Gates Foundation, writes in the foundation’s “Impatient Optimists” blog. “Ghana’s approach works so well for a few key reasons: Rigorous data gathering and analysis, accountability at the district level, and community outreach. Just as importantly, the vaccination program is fully integrated into the health system,” according to Gates. “Tomorrow we’re going to visit a director of health services in a district in central Ghana, then a nearby clinic,” he notes, adding, “I plan to share my experience in Ghana at the Global Vaccine Summit in Abu Dhabi April 24-25, where global health leaders will celebrate progress in immunization and demonstrate how the world is united to give all children a healthy start to life” (3/25).