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Jennifer's 20th Century History Blog

By Jennifer Rosenberg, About.com Guide to 20th Century History since 1997

50th Anniversary of the Polio Vaccine

Sunday April 10, 2005
On April 12, fifty years will have passed since the development of the polio vaccine. The development of the vaccine is a fascinating story, for prior to the vaccine's development in 1955, the disease paralyzed half a million worldwide. Read more from MSNBC.

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