File:Graph of cases 1920-1997...GIF
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Graph_of_cases_1920-1997...GIF (400 × 241 pixels, file size: 5 KB, MIME type: image/gif)
Summary
This graph is of reported poliomyelitis cases in the United States from 1920-1997. The Polio vaccines reduced paralytic polio cases by 100%.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:27, 30 April 2008 | | 400 × 241 (5 KB) | Cjimmy (talk | contribs) | This graph is of reported poliomyelitis cases in the United States from 1920-1997. The Polio vaccines reduced paralytic polio cases by 100%. |
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