It’s time for immunization
for all.

The Legacy
Vaccines are one of humanity’s greatest achievements.
Over the last 50 years, essential vaccines have saved at least 154 million lives. That’s 6 lives a day, every day, for five decades.
In these 50 years, vaccination has accounted for 40% of the improvement in infant survival worldwide, and more children now live to see their first birthday and beyond than at any other time in human history. Measles vaccines alone account for 60% of these lives saved.

The Challenge
Decades of collaborative efforts between governments, aid agencies, scientists, healthcare workers, and parents got us to where we are today –– a world where we’ve eradicated smallpox, almost eradicated polio and achieved historic progress against more than 30 vaccine-preventable diseases.
But progress has stalled in recent years, and millions of children are still not getting the lifesaving vaccines they desperately need. In 2023, 14.5 million children never received a single dose of any vaccine and more than 22 million children missed out on their first dose of measles vaccine.

The Future
We are at a watershed moment in the history of global health. In this critical moment, we cannot afford to blink.
Under the banner, ‘Immunization for All is Humanly Possible’, World Immunization Week 2025 aims to protect humanity’s greatest achievement and ensure even more children, adolescents, adults – and their communities – are protected against vaccine-preventable diseases. Vaccines are proof that less disease and more life is possible when we put our minds to it.
It’s time to show the world that Immunization for All is Humanly Possible.

How You Can Help
Your voice matters. Tell leaders around the world it's time for immunization for all and share the #HumanlyPossible message with your community.
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Learn about immunization from UNICEF, WHO, or Gavi the Vaccine Alliance