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 School of Science in the center. Students will normally exit through the right hand exit. There is school bus service which will bring students to and from school. NYCDOE Notably, the school has established relationships with many neighborhood businesses. If a student experiences trouble outside the school, the student can find refuge in almost any business nearby, and the proprietor will call both the school and 911. This has served as a model for many NYC schools. Salk School of Science The Salk School of Science is a junior high school, located in Lower Manhattan, New York City. It was founded in 1995