World Immunization Week 2023

World Immunization Week promotes the protection offered by vaccines.

Frequently asked questions

When is World Immunization Week 2023?

World Immunization Week 2023 is on Monday, 24 April 2023.

What day of the week is World Immunization Week 2023?

It falls on Monday.

How is World Immunization Week calculated?

This observance runs for 7 days from its calculated start date each year.