Newsweek has created a map showing where in the country norovirus is surging as reported cases of the stomach bug continue to increase.

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.

The U.S. Food and Drug Administration recalled certain frozen, raw and half-shell oysters over possible norovirus contamination.

Norovirus is the leading cause of foodborne illness in the United States, responsible for 58 percent of such infections acquired in the country each year, according to the CDC.

A cluster of norovirus virions. Charles D. Humphrey/Associated Press Cases of a wretched stomach bug are surging in parts of the United States this winter, according to government data.

Cases of norovirus are surging in the United States. It’s the country’s leading cause of foodborne illnesses but there have been even more outbreaks than usual recently — hitting schools ...

What is norovirus? Norovirus is the leading cause of foodborne illness in the United States, responsible for 58% of such infections acquired in the country each year, according to the CDC.

What is norovirus? Norovirus is the leading cause of foodborne illness in the United States, responsible for 58% of such infections acquired in the country each year, according to the CDC.

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

What is norovirus? Norovirus is the leading cause of foodborne illness in the United States, responsible for 58% of such infections acquired in the country each year, according to the CDC.