Updated September 29, 2023
CDC and partners celebrate health observances each year to honor those working in every corner of the globe to improve vaccine equity and highlight global progress toward a world of healthy people who are protected from vaccine-preventable disease, disability, and death.
On July 28th each year, we join partners to raise awareness about viral hepatitis, which impacts more than 296 million people worldwide.
The Big Catch-Up, 2023’s theme, spotlights the urgent need to find and vaccinate children who missed vaccines that help to protect them from illness and death.
The world has achieved a 99.9% reduction in wild poliovirus transmission and elimination in 5 of 6 WHO regions, yet persistent challenges remain to end all forms of polio.
- Vaccination Week in the AmericasEvery year as part of WIW, more than 40 countries and territories in the Americas come together to raise awareness about the importance of immunization and reach communities with life-saving vaccines.