In the latest move, Tachi Yamada, head of global health program, who left GlaxoSmithKline ( GSK) to join the foundation in 2006, is leaving in June.

FORBES: Jeff Raikes On The Challenges And Successes Of The Gates Foundation

Indeed, Tachi Yamada, the head of the Gates Foundation's Global Health Programme, suggests bringing in volunteers from the rich world on a temporary basis, to clear the backlog.

ECONOMIST: The XVIIth International AIDS Conference