Flu season may be mostly behind us, but a nasty, highly contagious stomach bug is rising. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. In recent ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Southbound hikers walk toward Pinchot Pass on the Pacific Crest Trail in California. (David Madison / Getty Images file) (David ...

After days landscaping around his Shirley home in May 2021, Michael Larkin noticed two ticks on his thigh. Then came the punishing headaches, rash, high fevers, and night sweats, followed by a ...

The types of Ebola and hantavirus worrying officials are very different from the species identified decades ago, raising new questions about how to respond. By Carl Zimmer This month, a pair of ...

Rachel Williams has been an editor for nearly two decades. She has spent the last five years working on small business content to help entrepreneurs start and grow their businesses. She’s well-versed ...

Coronaviruses are a big family of different viruses. Some of them cause the common cold in people. Others infect animals, including bats, camels, and cattle. But how did SARS-CoV-2, the coronavirus ...

This tracker is no longer being maintained. Numbers and graphics on this page will continue to update automatically but may become out of date as public health agencies wind down reporting of various ...

COVID-19 survives longer on non-porous materials like glass or plastic than on porous materials like clothing. You are more likely to catch the virus when an infected person breathes, coughs, or ...