World Immunization Week
World Immunization Week is observed next on Friday, April 24th, 2020. It was observed for 8 days starting the third Saturday in April from 2012 until 2013. It has been observed annually for 7 days starting on April 24th since 2014.
|Observed||First Year||Last Year|
|for 8 days starting the third Saturday in April||2012||2013|
|annually for 7 days starting on April 24th||2014||-|
World Health Organization (WHO) in 2012
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