In 1988, polio paralyzed 350,000 children every year. It struck without warning — a child could be running in the morning and unable to move her legs by nightfall. There was no cure. There was only a vaccine, and hundreds of millions of children in the poorest parts of the world had never received it.
That year, the World Health Assembly resolved to wipe polio from the earth. What followed was the largest public health mobilization in history. Twenty million volunteers fanned out across the globe, carrying vaccine in cold boxes to every village, every slum, every refugee camp they could reach. In India, two million vaccinators went door to door in a single day. In Nigeria, health workers navigated armed conflict and community resistance. In Pakistan and Afghanistan, vaccinators were murdered — and others stepped forward to replace them.
Polio cases have dropped by 99.9%. From 350,000 a year to fewer than a dozen. More than 20 million people who would have been paralyzed are walking today. The campaign has delivered more than three billion doses of vaccine.
The disease isn't gone yet. A handful of cases persist in the hardest-to-reach places on earth. But the workers keep going back. That's the part that matters — not just the ambition to end a disease, but the refusal to stop until it's done.
"Perhaps the reason the Universe gave you a broken world is so that you could have a chance to fix it."