HIV/AIDS researcher David Katzenstein dies The Stanford virologist conducted clinical vaccine trials, which led to the approval of antiretroviral drugs, greatly improving the survival of people living with HIV Feb 4 2021 David Katzenstein was widely praised for his efforts to bring better, cheaper methodologies to bear on HIV/AIDS prevention and treatment in Africa. TeachAids David Katzenstein, MD, professor emeritus of infectious diseases and global health at Stanford Medicine, who spurred advances in diagnosing, treating and preventing AIDS, died Jan. 25 of COVID-19 in Harare, ...