Microsoft founder Bill Gates said the United States created a 'vacuum' with its refusal to work with other countries in the coronavirus response

He said it was more concerned with 'trying to cast blame' than working on a global response to the pandemic

The billionaire hoped 'rationality will reappear' and the U.S. would join with WHO

Bill and his wife Melinda have donated hundreds of millions of dollars to develop a coronavirus vaccine through their foundation

Melinda said black Americans should be among the first to receive it 

The couple made the comments at a philanthropy summit hosted by Forbes