World Immunization Week

World Immunization Week – celebrated in the last week of April – aims to promote the use of vaccines to protect people of all ages against disease. Immunization saves millions of lives and is widely recognized as one of the world’s most successful and cost-effective health interventions.

Stresses the need for immunization among adolescents and adults - throughout life. And seeks to draw the world’s attention to the critical importance of reaching vulnerable people living in conflict situations or in the wake of emergencies.