Dengue is due to a flavivirus transmitted by the bite of the Aedes mosquito. It may be caused by one of four serotypes widely distributed globally. An estimated 70–500 million cases of dengue fever and several hundred thousand cases of dengue hemorrhagic fever occur each year with numbers growing in both dengue fever and dengue hemorrhagic fever as a consequence of climatic factors, travel, and urbanization. It is thus along with malaria one of the two most common and important vector-borne diseases of humans, with 2.5 billion people living in dengue-infected regions and regions of major intermittent outbreaks.The incubation period is 3–15 days (usually 7–10 days).
When The incubation period is 3–15 days (usually 7–10 days). When the virus is introduced into susceptible populations, usually by viremic travelers, epidemic attack rates range from 50% to 70%. Clinical Findings A. Symptoms…
