Cases of a wretched stomach bug are surging in parts of the United States this winter, according to government data.

According to the CDC, during the week of December 5 alone, 91 outbreaks of norovirus were reported, an increase from late November.

Here’s everything you need to know about norovirus as cases of the stomach bug are surging in parts of the United States.

As a severe outbreak of norovirus, also known as the stomach flu, spreads across the United States, doctors have shared advice with Newsweek on what to look out for about the illness.

A wave of norovirus outbreaks is sweeping across parts of the United States this winter, with reported cases significantly ...

CDC data indicates that December's increase in outbreaks has outpaced records for the same period since at least 2012. A graph by Newsweek using CDC data shows how the outbreak is outstripping ...

Norovirus is the leading cause of foodborne illness in the United States, responsible for 58% of such infections acquired in ...