The latest government data shows that cases of a fast-spreading stomach bug are surging in parts of the United States. The most recent numbers from the U.S.

While the US witnesses norovirus cases in the thousands all throughout the year, this year, there has been a disturbing increase, as is evident from CDC's latest December report.

A sharp increase in norovirus cases is sweeping the United States, according to the latest data from the Centers for Disease Control and Prevention (CDC). Often called the "stomach flu," norovirus is a leading cause of gastroenteritis,

The U.S. Centers for Disease Control and Prevention says there were 91 outbreaks reported during the week of Dec. 5, up from 69 cases the last week of November, per The Associated Press. There have been a maximum of 65 outbreaks reported during the first week of December in recent years.

Norovirus, often referred to as the stomach flu, has been seeing a surge in the United States. The spike in cases mirrors trends in Minnesota, where the state saw double its average December cases, according to local health authorities.