Yellow Fever
Mosquito disease causing jaundice. Flavivirus with hepatic necrosis and black vomit in tropics.
Key facts
| Cause | Virus |
|---|---|
| Spread | Arthropod (Mosquito) |
| Incubation | 3–6 days |
| Vaccine | Yes |
| Treatment | Supportive care |
Did you know?
The virus targets the dorsal motor nucleus of the vagus nerve, causing gastric stasis (hence severe vomiting) and autonomic dysfunction—manifesting as Faget's sign: the paradoxical bradycardia (pulse <90 bpm) despite high fever, a hallmark of yellow fever's brainstem invasion.
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