Researchers at the University of California, Davis, have traced a deadly cat coronavirus in a way that changes what you think ...

For decades, biology textbooks have drawn a firm line: viruses are not alive. They lack the machinery to reproduce on their own, they carry no metabolism, and they depend entirely on host cells to ...

Bird flu viruses are a particular threat to humans because they can replicate at temperatures higher than a typical fever, one of the body's ways of stopping viruses in their tracks, according to new ...

Viruses are tiny agents that can infect a variety of living organisms, including bacteria, plants, and animals. Like other viruses, the dengue virus is a microscopic structure that can only replicate ...

The tiny shell protecting the HIV virus resembles a slightly rounded ice cream cone, but there is nothing sweet about it.