Dr. Hannah Leslie is a Research Scientist at the Harvard Chan School of Public Health, where she leads the development of the People’s Voice Survey for the QuEST Network. Hannah received an MPH and a PhD in epidemiology from the University of California, Berkeley; her dissertation research focused on social determinants of substance use and transmission of HIV and STIs. She completed a postdoctoral fellowship at HSPH and served as Measurement Research Lead for the Lancet Global Health Commission on High Quality Health Systems in the SDG Era.