World Immunization Week

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World Immunization Week
World Health Organization Flag.jpg
Observed byAll member states of the World Health Organization
DateLast week of April

World Immunization Week is a global public health campaign to raise awareness and increase rates of immunization against vaccine-preventable diseases around the world. It takes place each year during the last week of April (24th - 30th).

Immunization can protect against 25 different infectious agents or diseases, from infancy to old age, including diphtheria, measles, pertussis, polio, tetanus and COVID-19. The World Health Organization (WHO) estimates active immunization currently averts 2 to 3 million deaths every year. However, 22.6 million infants worldwide are still missing out on basic vaccines, mostly in developing countries.[1] Inadequate immunization coverage rates often result from limited resources, competing health priorities, poor management of health systems and inadequate surveillance. The goal of World Immunization Week is to raise public awareness of how immunization saves lives, and support people everywhere to get the vaccinations needed against deadly diseases for themselves and their children.

World Immunization Week sprung out of the efforts taking place across different countries and regions for a week-long immunization awareness commemoration. World Immunization Week is one of eleven official campaigns marked by the WHO, along with World Health Day, World Blood Donor Day, World No Tobacco Day, World Tuberculosis Day, World Malaria Day, World Patient Safety Day, World Hepatitis Day, World Antimicrobial Awareness Week, World Chagas Disease Day and World AIDS Day.[2]


The World Health Assembly endorsed World Immunization Week during its May 2012 meeting.[3] Previously, Immunization Week activities were observed on different dates in different regions of the world. Immunization Week was observed simultaneously for the first time in 2012, with the participation of more than 180 countries and territories worldwide.[4][5]


A child being immunized against polio

Each World Immunization Week focuses on a theme. The themes have included the following:[6][7]

  • 2022 : Long life for all[8]
  • 2021: "Vaccines bring us closer"[9]
  • 2020: "Vaccines Work for All"
  • 2018 & 2019: "Protected Together: Vaccines Work!"
  • 2017: "Vaccines Work"
  • 2015 & 2016: "Close the immunization gap"
  • 2014: "Are you up-to-date?"
  • 2013: "Protect your world – get vaccinated"
  • 2012: "Immunization saves lives"

See also


  1. World Health Organization, Immunization coverage. Archived 2017-07-13 at the Wayback Machine WHO Fact sheet N° 378, updated February 2014. Accessed 9 April 2014.
  2. World Health Organization, WHO campaigns. Archived 2013-03-03 at the Wayback Machine Accessed 20 October 2020.
  3. World Health Organization, World Immunization Week essentials. Accessed 9 April 2014.
  4. Canadian Public Health Association, The World’s First “World Immunization Week”. Archived 2016-11-05 at the Wayback Machine Accessed 9 April 2014.
  5. US Centers for Disease Control and Prevention, World Immunization Week. Archived 2019-06-14 at the Wayback Machine Accessed 9 April 2014.
  6. World Health Organization, World Immunization Week 2014. Accessed 9 April 2014.
  7. World Health Organization, World Immunization Week 2016. Archived 2022-01-12 at the Wayback Machine Accessed 27 January 2016.
  8. "World Immunization Week 2022". Archived from the original on 22 April 2022. Retrieved 23 April 2022.
  9. "World Immunization Week 2021". Archived from the original on 2022-05-16. Retrieved 2022-04-23.

External links