Bill Gates gives $600m more to stop TB

The Global Plan to Stop Tuberculosis has received a $600m (£337m) boost from Microsoft chairman Bill Gates.

The campaign, backed by more than 400 organisations worldwide, aims to treat 50 million people in the next 10 years.

Launching the plan with UK Chancellor Gordon Brown and Nigerian President Olusegun Obasanjo, Mr Gates said it was a 'chance to save 14 million lives'.

Mr Gates has already committed $300m to the programme, but the total cost of the plan will be $56bn over 10 years.