Diep has a medical background from Vietnam, a Masters Degree in International Public health at The University of Sydney, and recently completed her PhD in Medical Epidemiology at UNSW. Her thesis aims to evaluate the effectiveness and cost-effectiveness of optimal cervical cancer prevention strategies in Vietnam. Before starting her PhD, Diep worked as a research program officer in several projects, including a clinical trial of alternative dose schedules of HPV vaccine, a HPV vaccine demonstration project to assess acceptability and feasibility of HPV vaccine delivery strategies, a pilot cervical screening using visual inspection of acetic acid (VIA) and costing and willingness to pay studies in Vietnam as part of the Global HPV vaccine project funded by Bill & Melinda Gates Foundation to introduce HPV vaccine in four countries, including Vietnam (2007-2011). She also worked as a technical officer in other health projects in Vietnam (2009-2014). Diep currently focuses on modelling the impact of HPV vaccination and cervical screening strategies in low and middle income countries.