Presenter Nigel Wrench asks why HIV prevention messages have largely failed to make a difference to the spread of the pandemic.

Working with leading advertising agency J Walter Thompson, he attempts to come up with a new kind of message which learns from the mistakes of the past and makes use of the same techniques employed to sell consumer goods.

Listen here
	The Message Part 1

	The Message Part 2

The Aids debate Discuss the issues and explore the facts in the BBC's season on Aids