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. 2008 Sep;116(9):A382–A388. doi: 10.1289/ehp.116-a382

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graphic file with name ehp-116-a382f3.jpg — In the wake of rapid urbanization and heightened global travel since World War II, the number of both dengue cases and countries reporting infection has climbed precipitously.

Source: WHO; http://www.who.int/csr/disease/dengue/impact/en/index.html