In 1964, Schlesinger joined the faculty of the Department of Microbiology and Immunology (now called the Department of Molecular Microbiology) at the
Washington University School of Medicine. She was the first woman faculty member in the department. She remained at the school for the rest of her career, with sabbaticals and visiting positions at the
Imperial Cancer Research Fund Laboratories and at
Harvard University. She advanced to
full professor in 1977. Schlesinger retired and assumed
professor emeritus status in 2001. she co-edited a major reference work on
togaviruses and
flaviviruses. Schlesinger was elected a fellow of the
American Association for the Advancement of Science in 1996 and served in a number of leadership positions for the organization. She has also served as an interviewer and
oral historian on the same subjects, publishing long interviews with
Herman Eisen and
Howard Schachman. ==References==