>A successful rollout ... could save up to 1m lives over the next five years. Yet that probably will not happen. The main reason, as rich countries slash their aid budgets, is that nobody wants to pay for it.<p>>The study in Kenya, Ghana and Malawi shows a drop of 13% in deaths among children who were eligible for the three shots.<p>>Just $4,000 spent on a programme involving R21 is enough to avert one death.<p>>the recommended four doses cost $15.60, which is more than many African governments spend per person on health care in a year.