Robert R. Redfield Jr. is an American virologist, a professor of Medicine at University of Maryland, Baltimore and a co-founder and associate director of the Institute of Human Virology at the University of Maryland School of Medicine. Dr. Redfield is known for his pioneering contributions in clinical research, and in particular for his extensive research into the virology and therapeutic treatments of HIV infection and AIDS. During the 1980s in the early years of investigation into the AIDS pandemic Redfield led the research that was the first to conclusively demonstrate that the HIV retrovirus could be heterosexually transmitted. He also developed the staging system now in use worldwide for the clinical assessment of HIV infection.

Redfield's parents were both scientists at the National Institutes of Health, and Redfield's career in medical research was influenced by this background. At college Redfield gained experience working in laboratories at Columbia University where the involvement of retroviruses in human disease was investigated.

As an undergraduate Redfield attended Jesuit Georgetown University, obtaining a B.S. from the university's College of Arts and Sciences in 1973...

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