Recent studies on assessing the influence of human mobility on dengue transmission can be categorized into three approaches. Therefore, understanding the spatial structure of population mobility is crucial for assessing the possible mechanisms of dengue diffusion and identifying the geographic characteristics of high-risk areas.
Routine mobility behaviors, such as daily commutes, are also drivers of large-scale intercity transmission. Via air travel, disease importation from dengue-endemic countries is a trigger point for initiating indigenous epidemics in some dengue-epidemic countries or regions, such as Tokyo, Japan south-east France and southern Taiwan. Population movement across countries by air traffic is the major driver of the international spread of the disease. ĭue to the limited flight range of mosquitoes, it is impossible for the virus to be transmitted to distant areas by dengue vectors. The Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) also confirmed that global warming would create more suitable habitats for vector mosquitoes in sub-tropical regions and speed up the geographic expansion of dengue epidemic areas due to global mobility including to some high-latitude countries such as France and Japan. Previous studies showed meteorological and social–economic risk factors that facilitate the disease transmission, including temperature, rainfall, population density, demographic composition, urbanized levels and more. More than 125 countries are impacted by the disease, and it is an increasingly serious threat to global public health due to climate change. Since the 1970s, dengue fever has been gradually spreading throughout tropical and sub-tropical countries, and its transmission involves interactions among carriers, mosquitoes, and healthy humans. Dengue fever is a vector-borne infectious disease that is transmitted by contact between vector mosquitoes and susceptible hosts.
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