If you plan on traveling abroad this summer, especially to regions within South America or Africa, it’s imperative to be aware of your risk of yellow fever, a potentially deadly flavivirus endemic to ...

Experts are warning that yellow fever — which hasn’t had a major outbreak in the U.S. since 1905 — could make a comeback. (Photo illustration: Yahoo News; photo: Getty Image) When you think of yellow ...

A century after early warnings, researchers now fear that yellow fever could erupt beyond its historical strongholds, posing an unprecedented threat to billions in the Asia-Pacific and beyond. Study: ...

Mosquito-transmitted virus infections are on the rise and their spread is accelerating in Texas, Florida and elsewhere in the American South. With the rise of mosquito-borne illnesses, infectious ...

The virus that causes yellow fever has a permanent foothold in the Brazilian Amazon, where the pathogen is widespread in wild animals living in the region’s forest. Now scientists have discovered that ...

An ongoing outbreak of yellow fever in Colombia is sickening and killing rare and threatened monkey species in captivity, a new study shows. Between February and May 2025, authorities reported eight ...

Colombia’s health ministry declared a nationwide health emergency on Thursday due to the “active circulation” of yellow fever. Since September 2024, there have been 75 recorded cases of yellow fever ...

Scientists warn the risk of zika, dengue and other deadly diseases spread by the "yellow fever" mosquito — nearly eradicated decades ago — are increasing because of climate change. But a new study by ...