In 1989, Fauci and then-U.S. Health and Human Services Secretary Louis W. Sullivan (right) announced results of studies showing that the antiviral drug AZT had delayed the onset of disease in some people with HIV.

In 1989, Fauci and then-U.S. Health and Human Services Secretary Louis W. Sullivan (right) announced results of studies showing that the antiviral drug AZT had delayed the onset of disease in some people with HIV.