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World Immunization Week

Each year the last week of April is reserved for recognizing the importance of immunizations and their lifesaving and life-prolonging benefits.  World Immunization Week aims to remind us all that vaccines are one of humanity’s greatest achievements and that “Immunization for All is Humanly Possible”.

Since Edward Jenner developed the first-ever vaccine in 1796 for smallpox, the global scientific community has developed many more effective vaccines.  As of 2023, vaccines are available to treat thirty-three diseases.  The positive effects of immunization are truly extraordinary – the World Health Organization estimates that since 1974, vaccines have saved approximately 154 million lives, or 6 lives per minute during these past fifty years.

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Some of history’s greatest immunization achievements include Louis Pasteur’s anthrax vaccine in 1881; Jame Ferran y Clua’s first vaccine for cholera developed during 1884-1885; the first vaccine for tuberculosis in 1921 by Albert Calmette; and Jonas Salk’s polio vaccine released in 1955. 

More recently, the life-saving vaccines developed to fight the COVID-19 pandemic have been administered to more than 5.5 billion people worldwide, more than 72% of the global population.  The National Institutes of Health estimates that COVID-19 vaccines have saved between 14 and 20 million lives since their release in late 2020.

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Sources

World Health Organization

https://www.who.int/campaigns/world-immunization-week/2025

Our World in Data; February, 2024; Vaccination by: Samantha VanderslottSaloni DattaniFiona Spooner, and Max Roser

https://ourworldindata.org/vaccination#:~:text=Since%20the%20first%20vaccine%20%E2%80%94%20the,available%20against%2033%20human%20diseases.

National Institutes of Health

https://pmc.ncbi.nlm.nih.gov/articles/PMC9537923

The New York Times, May 3, 2023; Tracking Coronavirus Vaccinations Around the World by Josh Holder

https://www.nytimes.com/interactive/2021/world/covid-vaccinations-tracker.html

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