UNICEF is the world's largest distributor of vaccines to the developing world, supplying vaccines for more than a third of the world's children. In 2010 we bought over 2.5 billion vaccines worth £470 million.
Blog: How UNICEF protects children from deadly malaria
In emergencies such as conflict or a natural disaster, we deliver vaccination campaigns to help protect vulnerable children from preventable diseases when health services are down.
Globally, children face many challenges, but disease is one of the greatest. Every day 4,000 children will die and many more will fall ill from diseases that could be prevented by a simple vaccination. For just £12, we can vaccinate a child against six of them: measles, polio, tetanus, TB, diphtheria and whooping cough.
There's still a lot of work to be done, but today 4 out of 5 children are being immunised – that's more than ever before. With your help, we could eliminate a number of these terrible childhood diseases in our lifetime.
In 2012, Ewan McGregor filmed a BBC documentary, Cold Chain Mission, about UNICEF's immunisation work. Find out more.