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Automatische Übersetzung:
Virus Farm Polio Vaccine -- Miss Elsie N. Ward of the University of Pittsburgh school of medicine unloads from a revolving drum tubes containing viruses being prepared for use as a polio vaccine which has been tested successfully on 90 children and adults. Use of the vaccine against all forms of polio was announced tonight by Dr. Jonas E. Salk, 38, professor of research bacteriology of the University of Pittsburgh. March 26, 1953. (Photo by AP Wirephoto).