A new report by the World Health Organization has revealed that an estimated 51.2 million lives have been saved through vaccines in Africa over the past 50 years.

The report finds that for every infant life saved over that period close to 60 years of life are lived.The report was released recently to mark the start of this year's African Vaccination Week and World Immunization Week from the 24th to the 30th of April under the theme "Safeguarding Our Future: Humanly Possible".

For more on the report -Aurelie Kalenga spoke to Professor Charles Shey Wiysonge Regional Adviser on Immunisation - and Team Lead for the Vaccine-Preventable Diseases Programme at the WHO's Regional Office for Africa...