File:Pertussis Graph 1.pdf
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Pertussis_Graph_1.pdf (file size: 106 KB, MIME type: application/pdf)
Summary
Trends in pertussis cases over the last century from National Notifiable Diseases Surveillance System (NNDSS) reports 1922-2011.
Copyright status:
This is a document of the United States Government and is therefore public domain.
Source:
http://www.cdc.gov/media/Pertussis%20Cases_1922_2011_accessed%20July%205%202012[1].pdf
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 09:53, 16 November 2012 | (106 KB) | Peter.tissell (talk | contribs) | Trends in pertussis cases over the last century from National Notifiable Diseases Surveillance System (NNDSS) reports 1922-2011. |
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