What do you really know about vaccines? Take the quiz.

Twenty-five years ago, far too many children didn’t live to see their fifth birthday. Since then, child mortality has been cut in half—thanks in large part to vaccines.

Behind this transformation is a global network of health workers, scientists, and partners working together to develop life-saving vaccines and ensure they reach people who need them.

How much do you know about the power of vaccines? Test your knowledge below!

Make your best guess for each question, and then click Next for a new question!

Vaccines are one of humanity’s greatest achievements, protecting against 30 diseases—including some cancers—and saving hundreds of millions of lives.

Thanks to the collaborative efforts of health workers, scientists and partners like Gavi, the Vaccine Alliance, more children than ever before are being reached with life-saving immunizations.

But progress is stalling. In 2023 alone, 14.5 million children missed all routine vaccines, and millions more missed critical measles doses.

Every child deserves protection from preventable diseases, no matter where they live. Continued support for immunization efforts is essential to give more children the chance to survive and thrive—and to safeguard health for generations to come.