A second type of bird flu has been found in U.S. dairy cows for the first time, the U.S. Department of Agriculture (USDA) announced on Wednesday.

The Sudan virus, a close relative of Ebola, has a fatality rate of 50% but remains poorly understood in terms of how it infects cells. Currently, no approved treatments exist. To address this critical ...

Humans have an exceptional ability to deal with viruses. In most cases, your immune system is able to fight an infection. On ...