University of Pittsburgh History: April 12, 1955

Issue Date: 
April 9, 2007

An ongoing series highlighting University of Pittsburgh history

April 12, 1955—The polio vaccine developed by a Pitt research team led by Jonas Salk is announced as being “safe, effective, and potent.” Among the participants in a 50th anniversary celebration of the Salk vaccine in April 2005 is Julius Youngner, the only surviving scientist from Salk’s core research team. Youngner is Distinguished Service Professor Emeritus of Molecular Genetics and Biochemistry in Pitt’s School of Medicine.