Figure 1.

Countries or areas of the world where dengue was reported in 2011, as per data collected by the World Health Organization. Reprinted with permission from Murray et al[8]. The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted and dashed lines on maps represent approximate borderlines for which there may not yet be full agreement.