About two-thirds of us have it in our bodies, but for most people, the bacterium Helicobacter pylori (H. pylori for short) ...

In an early clinical trial, an experimental norovirus vaccine given as a pill produced defensive responses exactly where it counts—in the saliva of older people most vulnerable to the explosive ...

Most cases of the 24-hour stomach bug are caused by norovirus, one of the most contagious viral infections. While it is often associated with foodborne outbreaks, norovirus can spread through ...

What is norovirus, and how is it spreading? Norovirus, often called the "stomach flu," is a highly contagious virus that causes nausea, vomiting, diarrhea and stomach cramps. Occasionally ...