YELLOW FEVER
Yellow fever is an acute viral disease. The virus, a 40 to 50 nm enveloped RNA virus of the family of Flaviviridae is transmitted by the bite of mosquitoes (the yellow fever mosquito, Aedes aegypti, and other species). Yellow fever is an important cause of hemorrhagic illness in tropical and subtropical areas of African and South American despite existence of an effective vaccine. The yellow refers to the jaundice symptoms that affect some patients.
