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Yellow Fever

Mosquito-borne virus

Transmitted by Aedes and Haemagogus mosquitoes in tropical regions of Africa and South America.

Risk to travelers
High
Vaccine
Single dose
Global risk map
Risk level
High risk
Moderate risk
Low risk
No risk

Risk levels reflect overall risk for travelers and may vary by season and location.

🧬Transmission
Aedes / Haemagogus mosquitoes
⏱️Incubation
3–6 days
📅Seasonality
Year-round in endemic zones
💉Vaccine
Single dose · lifelong · entry cert