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. 2015 Apr 1;92(4):811–817. doi: 10.4269/ajtmh.14-0461

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©The American Society of Tropical Medicine and Hygiene

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 credited.

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Figure 1. — Vietnamese provinces included in the study are hatched (Panel A). Exponential decrease in annual incidence of suspected malaria cases per 1,000 persons is observed in the changes from 1992 (Panel B) to 2000 (Panel C) and 2010 (Panel D). Note the use of a non-linear scale to accommodate the large dynamic range in incidence.