World Immunization Week
World Immunization Week is held on April 24. This event in the third decade of the month April is annual. 
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World Immunization Week – celebrated in the last week of April (24 to 30 April) – aims to promote the use of vaccines to protect people of all ages against disease. Immunization saves millions of lives every year and is widely recognized as one of the world’s most successful and cost-effective health interventions.
Similar holidays and events, festivals and interesting facts
International Pixel-Stained Technopeasant Day on April 23
UN English Language Day on April 23 (United Nations);
UN Spanish Language Day on April 23 (United Nations);
International Nose Picking Day on April 23
International Girls in ICT Day on April 23 (aims to encourage and empower girls and young women to consider studies and car eers in the growing field of Information and communications technology);
World Labrador Day on April 23
Health Statistician's Day in Peru on April 23
International Day of Youth Solidarity in the Struggle Against Colonialism, for a Peaceful Existence on April 24
International Day Against Vivisection on April 24
International Day of Multilateralism and Diplomacy for Peace on April 24 (A/RES/73/127. Multilateralism, process of organizing relations between groups of three or more states);
International Day Against Meningitis on April 24
African Vaccination Week on April 24
World Penguin Day on April 25
World Veterinary Day on April 25 (Last Saturday in April);
International Delegate’s Day on April 25 (A/RES/73/286);
International TableTop Day on April 25 (Celebrate on the last Saturday of April);
International Sculpture Day on April 25 (Held on the last Saturday of April);
International A cappella Week Hanover on April 25 (Begins on Saturday of the last full week of April);
International Financial Independence Day on April 25
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