🦟 Yellow Fever
PH
PureHealthness Editorial Team · Health writers & reviewers
📝 Last reviewed: August 2026
✔ Transparent sourcing · Some articles are AI-drafted, then reviewed & fact-checked by our team
📝 Last reviewed: August 2026
| In brief | Sudden fever, muscle pain (particularly in the back), headache, nausea, and in severe cases, jaundice. |
|---|---|
| Category | Infectious |
🔍 What causes it
A mosquito-borne virus (Aedes and Haemagogus mosquitoes) — endemic in parts of Africa and South America. Not spread person-to-person. The "yellow" refers to the jaundice of severe cases.
⚠️ Key symptoms
- Sudden fever and chills
- Back and muscle pain, headache
- Nausea and vomiting
- Severe phase: jaundice, bleeding, organ failure
💊 Treatment
No specific antiviral — supportive care (fluids, fever control, hospital care for severe cases). Prevention is the vaccine — a single dose gives lifelong protection and is required for travel to endemic areas.
🛡️ Prevention
The yellow fever vaccine + mosquito protection (repellent, nets, long sleeves).
🚨 See a doctor / red flags: See a doctor promptly if symptoms are severe, do not improve, or get worse — especially for children, older adults, pregnant women, or anyone with a chronic condition.
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