Dengue is transmitted by the bite of an Aedes mosquito infected with any one of the four dengue viruses. Symptoms appear in 3–14 days (average 4–7 days) after the infective bite. Dengue fever is a severe, flu-like illness that affects infants, young children and adults. There is no specific treatment for dengue fever. Dengue haemorrhagic fever is a potentially lethal complication but early clinical diagnosis and careful clinical management by experienced physicians and nurses often save lives.
More than 70% of the disease burden is in South-East Asia and the Western Pacific area. Africa and the Eastern Mediterranean are much less affected. In Latin America and the Caribbean, the incidence and severity of disease are increasing rapidly. Increase in international air travel is facilitating the rapid global movement of dengue viruses. This increases the risk of dengue haemorrhagic fever epidemics by introducing new dengue viruses into susceptible populations.
Source: WHO
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