The Bill and Melinda Gates Foundation said it would donate $10 Billion over the next 10 years to and deliver vaccines for the world’s poorest countries. The funds are estimated to save more than 8 million children by 2020.

“We must make this the decade of vaccines,” said Bill Gates. “Vaccines already save and improve millions of lives in developing countries. Innovation will make it possible to save more children than ever before.”

The Microsoft founder and his wife said that more needs to be done from the private sector in helping developing countries dramatically reduce child mortality by the end of the decade and called for other to help with funding and research in childhood immunization.

“Vaccines are a miracle—with just a few doses, they can prevent deadly diseases for a lifetime,” said Melinda Gates. “We’ve made vaccines our number-one priority at the Gates Foundation because we’ve seen firsthand their incredible impact on children’s lives.”