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 Institute for Biological Studies have directly influenced Kahn in his design. Ultimately, the Salk Institute's meaning can be interpreted as transcending function and physical place as a reflection of Western civilization's pursuit of truth through science. In 2014, the Getty Conservation Institute partnered with the Salk Institute to preserve the concrete and teak building which is, due to its coastal location, subject to the punishing rigors of a marine environment. Although the Salk Institute is not a degree-granting institution, it runs a graduate program together with the neighboring UCSD, and all Salk Institute professors receive adjunct appointments in the Division of Biological Sciences at