Highly contagious noroviruses cause miserable symptoms, and infections have been on the uptick in recent weeks.

Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is spiking across the US. What to know about ...

The data show 91 outbreaks of norovirus during the week of Dec. 5, a sharp rise from the 69 outbreaks recorded the previous week, according to the Associated Press. For context, the first week of ...