Dengue and Prevention Dengue (pronounced DENgee) fever is a painful mosquito-borne disease caused by any one of four closely related dengue viruses. These viruses are related to the viruses that cause West Nile infection and yellow fever. An estimated 400 million dengue infections occur worldwide each year, with about 96 million resulting in illness. Dengue fever is transmitted by the bite of an Aedes mosquito infected with a dengue virus. The mosquito becomes infected when it bites a person with dengue virus in their blood. It can’t be spread directly from one person to another person. Symptoms of Dengue Fever Symptoms, which usually begin four to six days after infection and last for up to 10 days, may include * Sudden, high fever * Severe headaches * Pain behind the eyes * Severe joint and muscle pain * Fatigue * Nausea * Vomiting * Skin rash, which appears two to five days after the onset of fever * Mild bleeding (such a nose bleed, bleeding g
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