Dr. Margaret (Peggy) Johnston, an independent consultant, previously served as Senior Program Officer at the Bill & Melinda Gates Foundation where she oversaw the HIV team’s advanced clinical development grant portfolio, and played a key role in representing the foundation with private and government partners.

Prior to working at the Bill and Melinda Gates Foundation, she held the position of Director, Vaccine Research Program, Division of AIDS, National Institute of Allergy and Infectious Diseases (NIAID), which is part of the U.S. National Institutes of Health (NIH) (1998-2010). In this capacity, she led NIAID’s extramural HIV vaccine research grant and contract programs totaling over $250 million a year to support HIV vaccine discovery, preclinical evaluation and development, and clinical research, including NIH’s multi-center, international HIV Vaccine Trials Network, the Center for HIV/AIDS Vaccine Immunology and an interagency agreement with the Military HIV Research Program. She also served as NIH’s representative to the Global HIV/AIDS Vaccine Enterprise Science Committee as well as several non-US HIV vaccine advisory groups.