Cases of norovirus are spiking in the U.S. along with other illnesses in what some are calling a “quad-demic” of viruses.

A nasty stomach bug has been spreading across the country, including California, in recent months—leaving people feeling nauseous, achy or worse.

Experts warn the common respiratory virus does not have ‘pandemic potential’. Here’s what you need to know about rising HMPV ...

RSV, walking pneumonia and norovirus among them — is one that you may not have heard of for a while, or perhaps had assumed ...