A person in Washington is presumed infected with bird flu virus. Health officials in the state do not know the source.

The World Health Organization said it was the first such detection in Europe since 2010 and reinforced the message that no ...

The H3N2 strain has been dubbed the 'most deadly' and has been sweeping across the UK - here's everything you need to know ...

Doctors are raising the alarm over an early winter 'wave' of a deadly respiratory virus that is sweeping the US.

Tiny viruses that only infect and kill bacteria can help treat deadly antibiotic-resistant bloodstream infections with Staphylococcus aureus, results from a mid-stage trial suggest.

Ebola is one of the nasty viruses that can hide in the body even after a patient recovers and tests negative. It can reemerge and trigger a new... Viruses are tiny — and sneaky. So sneaky that some ...

Viruses are tiny — and sneaky. So sneaky that some play a deadly game of hide and seek. The "seek" part is all too familiar: They're always looking for ways to infect humans. Their ability to hide is ...

Viruses are tiny — and sneaky. So sneaky that some play a deadly game of hide and seek. The "seek" part is all too familiar: They're always looking for ways to infect humans. Their ability to hide is ...