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 ...

In simple terms: a virus is a tiny package of genetic instructions with a delivery system. Outside a cell it is metabolically inert. Once inside a susceptible cell, it redirects the cell's machinery ...

A virus that can invade the brain and cause fatal neurological disease has long puzzled scientists because it replicates in a place most viruses avoid: the nucleus of infected cells. For Eric Gibbs, a ...

When people talk about the coronavirus, they sometimes describe this invisible entity as if it has a personality and even a conscience. If you ask a biology or medical student what a virus is, they ...

Scientists investigating how influenza viruses replicate within cells "accidentally" discovered that different flu viruses use distinct strategies to infiltrate cells in the first place. They also ...

Using genomics, evolutionary biologists test several hypotheses on the origin of viruses. New evidence suggests they may have emerged more times than previously thought. Corroborating the virus-first ...