During the early 20th century, polio killed thousands of American children each summer and paralyzed many more. Now, as the world fights to eradicate the virus globally, we look back at the development of the polio vaccine and its successful deployment
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Read the complete post at http://www.npr.org/blogs/health/2012/10/10/162670836/wiping-out-polio-how-the-u-s-snuffed-out-a-killer?ft=1&f=103537970
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Oct 15 2012, 12:59 PM
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Shots - Health News