Who Are the Zero-Dose Children?

Millions of children have never received a single vaccine — take this quiz to find out why it matters.

What to know:

• Zero-dose children face deadly risks from diseases we’ve already learned how to prevent.
• The pandemic widened global vaccine inequality, leaving millions of children behind.
• Take the quiz — then share it to raise awareness and help bring vaccines to every child, everywhere.

Learn More about this cause:

Imagine a child never receiving a single routine vaccine. Not one. No protection against measles, polio, diphtheria, or any of the diseases we know how to stop. These are the zero-dose children — and right now, there are over 14 million of them around the world.

Their lives are shaped by conflict, displacement, poverty, and inequality. Many live in informal urban settlements, remote villages, or regions torn apart by war. They are among the hardest to reach — and yet, their right to health is just as real as yours or mine.

The COVID-19 pandemic didn’t just delay things — it shattered decades of progress, leading to the largest drop in immunization rates in 30 years. Global efforts are recovering, but we haven’t caught up. Millions are still unprotected — and that puts everyone at risk.

Take the quiz to learn who zero-dose children are, why they’re still being left behind, and what you can do to help. You might be surprised by what you didn’t know — and inspired to take action that saves lives.