Yellow fever is a dangerous mosquito-borne virus that, for hundreds of years, has caused sporadic, deadly outbreaks in the ...

Researchers show how specific immune cells are activated by the vaccine -- an important starting point for the development of new vaccines.

The West Nile virus has been detected in mosquitoes in the UK for the first time, health officials have announced. Fragments ...

The West Nile Virus has been detected in the UK for the first time. Although the public risk is low, officials have advised people to stay alert.