By Michelle Roberts
Health reporter, BBC News
Countries have pledged an unprecedented $4.3bn to help vaccinate children against preventable diseases like pneumonia.
The Global Alliance on Vaccines and Immunisation says this funding milestone will save more than four million lives in the next four years.
The donations exceeded expectations - GAVI asked for $3.7bn (£2.3bn).
The UK promised $1.3bn (£814m), and Microsoft tycoon Bill Gates said he would give $1bn to the campaign.
Other donatons announced at the London summit included $677m from Norway and $450m from the US.
***
more:
http://www.bbc.co.uk/news/health-13751809