Hikers along Southern California's Pacific Crest Trail have been smacked with fast-spreading cases of a "winter vomiting disease" – and they aren't the only ones. At least two dozen hikers have fallen ...

Global health officials are tracking an outbreak of Ebola caused by a rare species of orthoebolavirus called the Bundibugyo virus that has so far killed more than 130 people and infected more than 500 ...

Here’s what to know about the symptoms and spread of the virus, which has sickened people in the Democratic Republic of Congo and Uganda. By Dani Blum Global health officials are raising alarms about ...

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 ...

161,979 new RNA viruses have been discovered using a machine learning tool that researchers believe will vastly improve the mapping of life on Earth and could aid in the identification of many ...

Editor's note: Further updates on the hantavirus cluster can be found on Live Science's live blog, which will provide the latest information on the ongoing investigation. Confirmed and suspected cases ...

This week’s Cocodona 250 is now carrying a loss after organizers announced that a participant died following a serious medical emergency during the race. Organizers shared the news Tuesday, saying the ...

For the past several weeks, a dizzying array of gastrointestinal and respiratory viruses have been circulating throughout the Bay Area, and San Francisco appears to be experiencing the worst of it.

Take a group of runners circling a track at unique, constant paces. Answering the question of how many will always end up running alone, no matter their speed, has vexed mathematicians for decades.

Dianna Gunn built her first WordPress website in 2008. Since then, she's poured thousands of hours into understanding how websites and online businesses work. She's shared what she's learned on blogs ...

Some viruses that make us sick are cleared by the immune system within days, while others lurk in our bodies for a lifetime and reemerge later to cause new problems. How and why viral levels in the ...

Bacteria and the viruses that infect them are perpetually at war. Their deadly clashes push both kinds of microbes to evolve new traits that meet the challenges of every environment they inhabit, from ...