Alain Modoux , Senior Adviser to UNESCO for the WSIS , Geneva , spoke at the session on the World Summit on the Information Society . Maria Cheng , Spokesperson , Communicable Diseases Section , World Health Organisation ( WHO ) , Geneva , addressed the participants on `` SARS and the Media '' and Sir Peter Ustinov , UNICEF Goodwill Ambassador , a volunteer for UNESCO , was a keynote speaker at the congress on the issue of the `` Transatlantic Rift '' .