A new year might mean new viral threats. Old viruses are constantly evolving. A warming and increasingly populated planet puts humans in contact with more and different viruses. And increased mobility ...

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 ...

Scientists found that one tiny genetic change can completely alter how a coronavirus behaves in different species. Comparing SARS-CoV-2 with a closely related bat-only virus, they showed that a single ...

A virus normally found in marine animals such as shrimp and fish has now been linked to a chronic eye disease in humans, according to a new study published in the journal Nature Microbiology.

Most pandemics start when a pathogen spreads from animals to humans. It's a leading explanation for the COVID-19 pandemic: The SARS-CoV-2 virus, which causes COVID-19, is a cousin of coronaviruses ...