World Immunization Week 2399

24 April 2399 to 30 April 2399

World Immunization Week promotes the protection offered by vaccines.

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Frequently asked questions

When is World Immunization Week 2399?
World Immunization Week 2399 is on Saturday, 24 April 2399.
What day of the week is World Immunization Week 2399?
It falls on Saturday.
How is World Immunization Week calculated?
This observance runs for 7 days from its calculated start date each year.