The cause of the outbreak of the virus de ngaki to the world occurs due to several factors such as the.The change from a rural society to become community residents who were not planned in advance. The increase of population and rapidly emerging urban communities which lack of hygienic conditions are good enough. With increased mosquito breeding sources. Living conditions have changed, and the lack of effective mosquito population control. In addition to travel fast and comfortably at present makes it possible to bring the mosquito and the de ngaki virus infection to mosquitoes, as well as people who are in long-term incubation of the disease or who have medical conditions to ease.
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