Michel Sidibé, UNAIDS Executive Director addressing the opening ceremony of the XVIII International AIDS Conference in Vienna, Austria, 18 July 2010.

Credit:UNAIDS/Heimo Aga

Julio Montaner, President of the International AIDS Society at the opening of the XVIII International AIDS Conference in Vienna, Austria, 18 July 2010.

Credit:UNAIDS/Heimo Aga

Audience at the opening of the XVIII International AIDS Conference in Vienna, Austria, 18 July 2010.

Credit:UNAIDS/Heimo Aga

H.E. Mr. Kgalema Motlanthe, Deputy President of South Africa, speaking at the opening of the XVIII International AIDS Conference in Vienna, Austria, 18 July 2010.

Credit:UNAIDS/Heimo Aga

Youth Demonstrations at the opening of the XVIII International AIDS Conference in Vienna, Austria, 18 July 2010.

Credit:UNAIDS/Heimo Aga

H.E. Dr. Heinz Fischer, President of 'Austria addressing his closing remarks and welcoming all delegates to the XVIII International AIDS Conference in Vienna, Austria, 18 July 2010.

Credit:UNAIDS/Heimo Aga