David Fredricks is an expert in infectious diseases and the human indigenous microbiota, with a research focus on the bacterial biota of the human vagina and how changes in the composition of vaginal microbes lead to the syndrome bacterial vaginosis. He has authored more than 32 peer reviewed journal articles, 7 book chapters, and 9 editorials or invited reviews. He has been a peer reviewer for more than a dozen major medical and infectious diseases journals, and has served on several NIH study sections.