Yellow fever is a viral infection transmitted by mosquitoes.
Yellow fever is caused by a small virus that is spread by the bite of mosquitoes. This disease is common in South America and in sub-Saharan Africa.
Anyone can get yellow fever, but the elderly have a higher risk of severe infection. If a person is bitten by an infected mosquito, symptoms usually develop 3 - 6 days later.
Yellow fever has three stages:
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Source: ADAM Encyclopedia
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Source: ADAM Encyclopedia
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