How do Yellow Fever Virus cells reproduce?

Yellow fever is a tropical disease that is spread to humans by infected mosquitoes. Yellow fever is found only in parts of South America and Africa. There are two kinds of yellow fever, spread by two different cycles of infection. 1. Jungle yellow fever is mainly a disease of monkeys.People get jungle yellow fever when they put themselves in the middle of this natural cycle and are bitten by mosquitoes that have been infected by monkeys. Jungle yellow fever is rare and occurs mainly in persons who work in tropical rain forests. 2 Urban yellow fever is a disease of humans. It is spread by mosquitoes that have been infected by other people. Aedes aegypti is the type of mosquito that usually carries yellow fever from human to human. These mosquitoes have adapted to living among humans in cities, towns, and villages. They breed in discarded tires, flower pots, oil drums, and water storage containers close to human dwellings. Urban yellow fever is the cause of most yellow fever outbreaks and epidemics. People get yellow fever from the bite of an infected female mosquito. Yellow fever virus belongs to the Flaviviridae family, other members of which cause Dengue fever and Japanese encephalitis.. The mosquito injects the yellow fever virus into the bite. Symptoms start 3 to 6 days after being bitten by an infected mosquito. The virus can then be transported around the body and reproduce itself in many different body cells, usually the liver, kidneys and blood vessels. In serious cases, these cells may be damaged themselves. Also, the cells of the immune system are affected and release large quantities of signalling substances. These substances are the cause of the normal disease symptoms, like fever and muscular pain. Severe yellow fever infections can be fatal. There is no specific treatment for yellow fever. Persons with yellow fever should rest and drink plenty of fluids. They should be kept away from mosquitoes for the protection of others. Most people get better after a long recovery period.
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