Therefore, change in land-use permits the colonization of new habitats as well as the expansion or reduction of the range of the vector. During immature stages, vector species differ in their priorities for habitat. The spatial distribution of vector-borne diseases are typically determined by the geographical extent of the vector or reservoir hosts and their habitat priorities The appearance of numerous infectious diseases is strongly facilitated by environmental factors, such as climate or land-use change In the absence of an effective drug or vaccine, the only strategic options to control dengue are case management to prevent death and control of vectors to reduce viral transmission According to estimates by the World Health Organization (WHO), there could be as many as 50 to 100 million dengue infections worldwide each year In recent years, transmission of these viruses has increased predominantly in urban and semi-urban areas, and is a major international public health concern owing to its hold over approximately half of the world’s population. Epidemics of this mosquito-borne illness are rising worldwide due to increased international travel and unplanned urbanization combined with lack of effective mosquito control measures in tropical developing countries Dengue is endemic in tropical and subtropical regions as the viruses that cause it are transmitted through the bite of an already infected mosquito. , and is associated with numerous problems at local and global scales. This expansion is creating new opportunities for viruses to propagate in new areas and is acting as a common cause of epidemics in what were Aedes (Ae.) free countries Dengue is a vector-borne disease, estimated to affect millions of individuals each year in tropical and subtropical areas, and it is reemerging in areas that have been disease-free for relatively long periods of time.
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