Sarah Stewart (cancer researcher) at the age of 39. Stewart returned to the NIH in 1951, joining the National Cancer Institute (NCI), and eventually becoming medical director. Stewart developed an interest in researching viral links to cancer in light of the pioneering research of Jonas Salk in developing a vaccine for the virus which caused polio. Stewart developed an interest in researching viral links to cancer in light of the pioneering research of Jonas Salk in developing a vaccine for the virus which caused polio. Stewart is credited with discovering the Polyomavirus in 1953. She and research partner, Dr. Bernice E. Eddy, were successful
Salk Hall Roosevelt's Public Works Administration. The 225-bed hospital was originally part of the Medical Center associated with the University and was intended to be used primarily to treat communicable diseases. However, when antibiotics virtually eliminated the need to quarantine patients, the building had become a financial burden on the city. Therefore, in September 1949, work began on remodeling the building, and it temporarily housed Pitt's School of Public Health. In October 1957, the Municipal Hospital was formally acquired from the city for $1.3 million ($ million today) and renamed Jonas Salk Hall. For a time, the upper floors of the building