The cause of the outbreak of dengue virus throughout the world due to several factors, including the
transition from a rural society to an urban community, which was not planned in advance. The rapid increase of population, which has caused a large urban slum dwellers lack good hygiene. Has increased mosquito breeding. The living conditions change and the lack of effective control mosquito populations. In addition to the speed and convenience in the paint can bring mosquitoes and infectious dengue virus to mosquitoes, as well as individuals who are incubating the disease or in symptomatic patients move around easily.
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