The number of national norovirus outbreaks was the highest seen in December since at least 2012. Experts suggest increased hand-washing to avoid catching the ultra-contagious stomach bug.

Know someone with a stomach bug this holiday season? They're not alone -- cases of norovirus are surging in parts of the United States this winter, according to data from to the Centers for Disease Control and Prevention.

CDC data shows a sharp increase in norovirus cases. Here's what you need to know to avoid the stomach flu in Mississippi to keep your family healthy.

Cases of a wretched stomach bug are surging in parts of the United States this winter, according to government data. The most recent numbers from the U.S. Centers for Disease Control and Prevention show there were 91 outbreaks of norovirus reported during the week of Dec.

Norovirus is spreading rapidly across the country, with the most recent numbers from the CDC showing 91 outbreaks that were reported in the first week of December, up from 69 the week before that.