Health Observances

Updated October 19, 2022

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.

World Hepatitis Day: vaccination at birth is the most cost-effective strategy for eliminating hepatitis B.
(July 28)

On July 28th each year, we join partners to raise awareness about viral hepatitis, which impacts more than 296 million people worldwide.

5 groups shown: mothers and infants, children, teenagers, adults, and special populations. #Vaccines4Life Long Life for All
(last week in April)

CDC joins partners in honoring our public and community health workers for their tireless efforts to advance the goal of a Long Life for All, this year’s theme.

World Polio Day, October 24. A polio threat anywhere is a threat everywhere. Together, let’s end polio! #VaccinesWork
(October 24)

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.

More Observances

  • Vaccination Week in the Americas
    Every 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.