I have no words really to express my sadness, Ms Barre- Sinoussi, who was awarded a Nobel prize in 2008 for discovering HIV, told reporters in Canberra attending a National Press Club event.
I feel totally devastated.
Former US president Bill Clinton and Bob Geldof are among thousands of public figures, Aids researchers and people living with HIV expected to attend the July 20th-25th event.
There were 108 Aids meeting delegates on the flight, the Australian newspaper reported today.
We havent heard any numbers, said Sharon Lewin, head of infectious diseases at the Alfred Hospital in Melbourne and the other co-chair of the biennial conference.