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. 2010 Nov 5;5(11):e13849. doi: 10.1371/journal.pone.0013849

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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The number of AEs was tallied for each dosage group, as well as all of the placebos, who were combined into one group. The empty bars represent AEs that were determined to be not related to the vaccine. The filled bars represent AEs that were determined to be related to the vaccine. The dotted line indicates the total number of volunteers in each group. All AEs that were determined to be related to the vaccine were mild in severity.