We don't know the number of asymptomatic cases.” First discovered in 1955, the virus is transmitted from person to person by a small insect called the biting midge ( Culicoides paraensis), which ...

A little-known disease spread by insect bites has turned deadly, and health officials are sounding the alarm. More than 8,000 cases of Oropouche virus have been reported this year as of August 1. Most ...

The Chikungunya virus is spread by infected mosquitoes and causes symptoms like fever and severe joint pain. There is no specific medicine to treat the virus, and the best way to prevent it is by ...

The hepatitis B virus (HBV) affects the liver and can cause acute or chronic illness. The virus’s life cycle involves entering liver cells and producing new virus cells to trigger infections in other ...

Influenza experts are acknowledging that they were almost completely surprised by the way the current swine flu outbreak unfolded, so much so it is forcing the world to rethink what a pandemic is and ...