Hilary Koprowski he is chair of the department of radiation oncology at Christiana Hospital in Delaware. While at Lederle Laboratories, Koprowski created the world's first polio vaccine, based on an orally administered attenuated polio virus. In researching a potential polio vaccine, he had focused on live viruses that were attenuated (rendered non-virulent) rather than on killed viruses (the latter became the basis for the injected vaccine subsequently developed by Jonas Salk). Koprowski viewed the live vaccine as more powerful, since it entered the intestinal tract directly and could provide lifelong immunity, whereas the Salk vaccine required booster shots. Also, administering a vaccine
Salk Hall include the construction of an research tower in the parking area behind the existing building by Ballinger Architects with associates DRS Architects. The new tower is planned to house laboratories and support spaces relocated from their current home in Salk Hall in order to free up space for additional classrooms and offices in the original structure. The target completion date is July, 2014. A dental museum is housed in the first floor reception area of Salk Hall. The museum contains a variety of original dental artifacts, including a c. 1910 dental chair, and x-ray machine and instrument cabinet from the