File:Jonas Salk 1988.jpg

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Standing at the podium during his 1988 Centers for Disease Control visit, this photograph showed Dr. Jonas Salk, creator of the first polio vaccine in 1955, fielding questions during his presentation.

April 12, 2005, marked the 50th anniversary of the announcement that the polio vaccine, developed by Dr. Jonas Salk and his team of scientists at the University of Pittsburgh, was a success. "Safe, effective, and potent", were the words used to announce to the world that an effective vaccine had been found against a disease that once paralyzed 13,000--20,000 people each year in the United States alone.
Tarix Creation Date:1988
Mənbə CDC Public Health Image Library, photo ID # 7356
http://phil.cdc.gov/ (search for "7356")
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"This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image."

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Public domain
This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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indiki19:02, 18 noyabr 200919:02, 18 noyabr 2009 tarixindəki versiyanın kiçildilmiş görüntüsü1.503 × 1.788 (289 KB)Davepape (müzakirə | töhfələr)full resolution from CDC source
03:09, 24 mart 200703:09, 24 mart 2007 tarixindəki versiyanın kiçildilmiş görüntüsü700 × 832 (59 KB)DO11.10 (müzakirə | töhfələr){{Information |Description= Standing at the podium during his 1988 Centers for Disease Control visit, this photograph showed Dr. Jonas Salk, creator of the first polio vaccine in 1955, fielding questions during his presentation. April 12, 2005, marked th

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