Monday, 8 July, 2002, 13:37 GMT 14:37 UK New hope for Aids vaccine Most of the world cannot afford Aids treatments A US biotechnology company has been giving details of a vaccine against Aids, which it hopes could be available by 2005, to delegates attending the International Aids Conference in Barcelona. Q&A: Potential HIV vaccine - click here.The head of VaxGen, Donald Francis, told the meeting the vaccine worked on chimpanzees and said he was optimistic it would also work on humans. Mr Francis said the results of trials on humans would be available next year. I think we...