Polio vaccine poliomyelitis per million doses given. This compares with 5,000 cases per million who are paralysed following a polio infection. Both are generally safe to give during pregnancy and in those who have HIV/AIDS but are otherwise well. The first polio vaccine was the inactivated polio vaccine. It was developed by Jonas Salk and came into use in 1955. The oral polio vaccine was developed by Albert Sabin and came into commercial use in 1961. They are on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system. The wholesale cost in
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