Mary Mallon was an Irish immigrant who worked as a cook in and around New York City during the first years of the 20th century. Today she is better known popularly as "Typhoid Mary", due to the fact that she infected approximately 47 persons with typhoid fever and also for the massive publicity that surrounded her later imprisonment and long battle to clear her name. This engaging website serves as a complement to the recent NOVA program about the life (and broader context of public health concerns) of Mary Mallon. The program is based on a historical study of Mallon written by Professor Judith Walzer Leavitt of the University of Wisconsin, and explores the various implications of this various case that combines both a heightened sensitivity to public health issues and the ways in which this sensationalized incident was portrayed by various officials and journalists. Here visitors can read a letter written by Mallon during her imprisonment and browse through an interactive feature on the history of quarantine. Finally, there is also a selection of links to other related websites and a teacher's guide.