What causes yellow fever?

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Yellow fever is a viral illness caused by a flavivirus. This virus is carried by a specific type of mosquito called the Aedes aegypti, which is found mainly in South America and Africa. When a person is bitten by an infected mosquito, the virus enters the blood and multiplies, causing fever, body aches, and possibly organ failure and death.

Continue Learning about Viral Infections

Viral Infections

Viral Infections

Viral infections like herpes simplex, respiratory syncytial virus (RSV), chicken pox and rotavirus are infections caused by a virus instead of a bacterium. Viral infections do not respond to antibiotics, but some specific viruses ...

like influenza A and B can be treated with certain antiviral medications. Most commonly, treatment for viral infections includes drinking lots of fluids, getting rest, eating well and letting the illness run its course.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.