Dr Richard Sezibera, Secretary General, East African Community and GAVI board member, at the GAVI pledging event press conference in London, 13 June 2011.

At the end of a four-hour push to save lives hosted by David Cameron, Ellen Johnson-Sirleaf (President of Liberia) and Bill Gates (Bill and Melinda Gates Foundation), it was announced that US$4.3billion had been pledged towards vaccinating at least a quarter of a billion children in the next five years, in order to save the lives of four million children.

To find out more, please see: <a href="http://www.dfid.gov.uk/Media-Room/News-Stories/2011/GAVI-Pledging-Conference/#LatestNews" rel="nofollow">www.dfid.gov.uk/Media-Room/News-Stories/2011/GAVI-Pledgin...</a>

Picture: Ben Fisher/GAVI Alliance

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Over 80 million under-fives living in some of the poorest countries in the world will be vaccinated against killer diseases like pneumonia and diarrhoea with the help of British aid as part of a broader collective effort.