Fig. 1: Probability of occurrence of dengue in 2015.
From: The current and future global distribution and population at risk of dengue

a–c, Maps displaying global probability data (a) as well as data for North America and parts of Central America and the Caribbean (b) and North Africa, the Middle East and Europe (c). Values range from 0 (grey, unsuitable environment) to 1 (red, suitable environment).