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. 2006 Dec 20;1(1):e27. doi: 10.1371/journal.pone.0000027

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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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(a–d) correspond to vaccines being placed in front of the river.

(e–h) correspond to vaccines being placed after the river.

(a) and (e) are the first patches to be initially infected in both scenarios and are the furthest from any impedances.

(b) and (f) are the patches closest to the vaccine corridor and river, respectively.

(c) and (g) comprise the patches which contain the vaccine corridor and river in each simulation.

(d) and (h) are patches beyond the vaccine corridor and river.