World Immunization Week 2021

World Immunization Week promotes the protection offered by vaccines.

Frequently asked questions

When is World Immunization Week 2021?

World Immunization Week 2021 is on Saturday, 24 April 2021.

What day of the week is World Immunization Week 2021?

It falls on Saturday.

How is World Immunization Week calculated?

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