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. 2012 Dec 6;6(12):e1940. doi: 10.1371/journal.pntd.0001940

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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.

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Prevalence of Ab to Wb123 (i.e. the percent positive for Ab) in children ≤11 years old by 2 year age divisions in 1975 (left panel; red bars) and 1992 (right panel; blue bars). The shaded green area represents the period of time where children were born after island-wide treatment with DEC. Asterisks indicate a significant difference (p≤0.0045) by Fisher's Exact test between identical age groups from both time periods.