A species of invasive, "aggressive" mosquitoes known for transmitting yellow fever is spreading in California, according to local health officials. Multiple counties across the state, including Contra ...

Yellow Jack. Saffron Scourge. When yellow fever shows up in the Americas, tens of thousands fall. It's a disease that once plagued coastal cities in the United States from New Orleans to Boston. New ...

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 ...

Arboviral diseases, once mostly found in tropical and subtropical regions, are now spreading worldwide. This growing spread is fueled by climate change, urbanization, population growth, and increased ...

Yellow fever vaccine trial in St. Louis Parts of Africa and South America are dealing with multiple outbreaks of yellow fever. Right now, researchers at SLU are working to develop a new vaccine.

Costa Rica and El Salvador have taken a key step in modernizing public health by issuing the first digital yellow fever vaccination certificates in the Americas. This move, backed by the ...

Scientists discover how yellow fever and encephalitis viruses enter human cells, and block them with decoy molecules.