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. 2010 Oct 5;4(10):e835. doi: 10.1371/journal.pntd.0000835

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Burton et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Individual villages are represented by the grey lines. Several villages overlie each other with a prevalence of 0%. The overall village level average is represented by the black line. The dashed line represents the WHO TF_%1–9 treatment initiation threshold level of 10%. *Village No. 12 withdrew after 17-months. TF = Trachomatous Inflammation, Follicular.