Mosquito-borne infection
Yellow fever
A mosquito-borne viral infection that can cause severe liver illness and bleeding.
Explore Yellow fever on the monitor · Reviewed 2026-10-06
How it spreads
Bites from infected mosquitoes in affected parts of Africa and the Americas.
Symptoms and context
Fever, headache, muscle aches and nausea; severe disease may cause jaundice or bleeding.
Prevention
Vaccination and mosquito bite prevention protect against disease; check travel requirements with a qualified service.
When to seek advice
Obtain prompt advice for fever after travel to an affected area; jaundice or bleeding requires urgent care.
On the desk
No reviewed event summary is currently listed for this category. Search its collected reporting.
Read the original guidance
This is general information. Current local health guidance and professional assessment take priority for individual decisions.