Scientists discover how yellow fever and encephalitis viruses enter human cells, and block them with decoy molecules.

A giant virus discovered in Japan is adding fuel to the provocative idea that viruses helped create complex life. Named ushikuvirus, it infects amoebae and shows unique traits that connect different ...

The immune system has a tough job: When a tiny virus invades one of our cells, that cell must detect it and, within minutes, decide what to do. If the cell quickly self-destructs, that will prevent ...

A study has identified a new pathway that human immune deficiency virus (HIV) uses to enter the nucleus of a healthy cell, where it can then replicate and go on to invade other cells. The researchers ...

Influenza epidemics, caused by influenza A or B viruses, result in acute respiratory infection. They kill half a million people worldwide every year. These viruses can also wreak havoc on animals, as ...

Viruses have spent billions of years perfecting the art of invading cells, hijacking their machinery and spreading with ...

Across all domains of life, immune defenses foil invading viruses by making it impossible for the viruses to replicate. Most known CRISPR systems target invading pathogens' DNA and chop it up to ...

LONDON (Reuters) - A virus closely related to smallpox disguises itself as a piece of a broken cell to trick its way into cells, Swiss researchers said on Thursday in a discovery that could lead to ...

An ancient viral infection may have given animals the tools to become fast, coordinated and smart, a study has found. According to a paper published Thursday in Cell, complex nervous systems arose in ...