Pneumonia is responsible for more than 800,000 under-5 deaths each year—claiming a child’s life every 39 seconds. Vaccines against pneumococcus, Haemophilus influenzae type b (Hib), pertussis, measles, and influenza are important to help protect children from disease and prevent the lasting health, equity, and socioeconomic effects of pneumonia. This week, country leaders, scientific experts, program and policy officials, and advocates from around the world will meet in Barcelona to elevate pneumonia on national and global health agendas and raise the call for action against this common, serious, preventable cause of child illness and death.