What countries are at high risk for Yellow Fever outbreaks?

Yellow Fever poses a high risk in 42 countries, primarily located in Africa, Central and South America, and the Caribbean.

How severe can Yellow Fever become?

Yellow Fever can range from initial mild symptoms to a severe hemorrhagic fever that causes jaundice, bleeding, and critical organ damage, with a mortality rate of up to 50% in severe cases.

What is the current situation with Yellow Fever in South America?

In 2025, South America experienced a significant increase in Yellow Fever cases, a 5.6-fold rise compared to the previous year, with ongoing reports in early 2026 and spread to wider geographic areas.

Home / Health / Yellow Fever Surges: 42 Countries at High Risk

Yellow Fever Surges: 42 Countries at High Risk

25 Apr

•

Summary

Yellow Fever poses a severe, potentially fatal hemorrhagic risk.
Cases increased five-fold in South America during 2025.
Mosquitoes in urban Africa could rapidly spread outbreaks.

Yellow Fever Surges: 42 Countries at High Risk

A warning has been issued regarding the resurgence of Yellow Fever, a serious and potentially fatal mosquito-borne illness. The virus poses a high risk in 42 countries across Africa, Central and South America, and the Caribbean.

In South and Central America, 2025 saw a significant increase, with a 5.6-fold rise in confirmed cases compared to the previous year. Since early 2026, cases have continued to be reported, with outbreaks expanding beyond traditional risk areas like the Amazon region.

Africa also continues to report probable and confirmed Yellow Fever cases. Endemic areas face a high risk of transmission, exacerbated by the presence of Aedes mosquitoes in urban centers, increasing the potential for rapid, widespread outbreaks.

Yellow Fever infection can progress from initial flu-like symptoms to a severe hemorrhagic fever. This advanced stage can lead to jaundice, bleeding, and critical organ damage, with mortality rates as high as 50% in severe cases.

Disclaimer: This story has been auto-aggregated and auto-summarised by a computer program. This story has not been edited or created by the Feedzop team.

Yellow Fever Surges: 42 Countries at High Risk

25 Apr

•

Summary

Yellow Fever poses a severe, potentially fatal hemorrhagic risk.
Cases increased five-fold in South America during 2025.
Mosquitoes in urban Africa could rapidly spread outbreaks.

Disclaimer: This story has been auto-aggregated and auto-summarised by a computer program. This story has not been edited or created by the Feedzop team.