Excerpt: “Immunization is a key public health intervention, essential for achieving Universal Health Coverage and the Sustainable Development Goals. With over 154 million lives saved and a substantial reduction in the global burden of infectious diseases, immunizationn remains public health’s best buy showcasing what is humanly possible. Investing in strong immunization systems is not just a moral imperative, it also makes economic and social sense. It results in healthy, productive and resilient societies leading to wider economic benefits. Yet despite the huge gains achieved in the last 50 years, global immunization coverage rates have stagnated in recent years. This advocacy brief outlines the societal-wide benefits of vaccination, why progress is stagnating and why investment in Gavi and its 6.0 strategy — its most ambitious in history — is essential to protect more people, against more diseases, faster than ever before.”