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Vaccination Week In The Americas (VWA) is an annual public health campagin by the member states of the Pan American Health Organization (PAHO) to promote equity and access to immunization. It is marked each year during the last week of April.Since 2012 the campaign has been celebrated globally across all regions of the World Health Organization (WHO) under World Immunization Week. The WHO reports there are 25 diseases for which vaccines exist for their prevention and control.
