The prospects for an effective vaccine remain uncertain, but there is no doubt that the antiretroviral drugs currently available are both prolonging survival and allowing a better quality of life for HIV-infected individuals. A sobering statistic, however, is that more than 90% of all HIV-infected people live in developing countries with poor resources. Most of them lack access even to AZT, let alone expensive combination drug therapy. Clearly, prevention of HIV transmission remains crucial, and political will must underpin scientific developments in the worldwide battle against HIV and AIDS.
As we now know that there is not going to be one single answer to the problem of AIDS, future scientific developments are most likely to come from a multidisciplinary approach.