Next week, thousands of scientists, researchers, government leaders, public health officials and advocates from around the world will convene in Washington for the XIX International AIDS Conference (AIDS 2012).

WHITEHOUSE: Turning The Tide Together

His proposal, presented at the International Security Solutions Europe (ISSE) Conference in Berlin, Germany, is for all computers to have a "health certificate" to prove that it is uninfected before it connects to the net.

BBC: Sick PCs should be banned from the net says Microsoft