evidence: Meanwhile, in recent years, conflict has forced millions of children to flee their homes and migrate to camps for refugees or internally displaced people. Given that families in these settings are often transient, it’s much harder to monitor vaccination rates among these communities and reach children with the life-saving vaccines they need. [...] Despite undeniable progress over many decades, this State of the World’s Children report reveals that we are consistently missing one in five children with life-saving vaccines. It’s essential that we act now to vaccinate every child, no matter where they were born, who they are and where they live. By doing so, we’re giving today’s children and tomorrow’s adults the chance to thrive. These are the actions we can and must take: [...] Time and time again, down the years, when faced with outbreaks of preventable diseases, we’ve responded effectively – reaching and protecting millions of children in harm’s way with vaccines.