BOSTON - Massachusetts is seeing an increase in reported norovirus cases this season, according to Department of Public Health data. The number of cases recorded in November and December by the state is more than double what it was the year before over the same time period.

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

Norovirus, informally dubbed the “winter vomiting disease,” is making its rounds this winter. Weekly test positivity rates have so far surged by 340% during the 2024–25 season, according to a Fortune analysis of Centers for Disease Control and Prevention (CDC) data recorded as three-week moving averages.

UHS Wilson Medical Center was recently on a diversion due to high patient volume. Broome County Health Department called it "the perfect storm."

Last year, there were 16 outbreaks on cruise ships, from norovirus, salmonella, E. coli or other unidentified pathogens that cause gastrointestinal symptoms such as diarrhea or vomiting. That's the largest number of cruise ship outbreaks in 12 years.

A surge of norovirus cases, a contagious virus that is the leading cause of foodborne illness in the United States, has medical professionals advising caution. “It is a common cause of illness outbreaks on cruise ships,

As cases of norovirus continue to be reported across the United States, some may be wondering what exactly that is and how they can protect themselves.“Norovirus is a small virus that is known to cause outbreaks of gastrointestinal illness,

Most norovirus outbreaks occur when people who are already infected spread the virus to others by direct means, such as through sharing food or eating utensils.

Cases of gastrointestinal illness, with norovirus as a likely culprit, are rising in Lancaster County and across much of the nation.

The dreaded norovirus illness known for severe bouts of vomiting, diarrhea and cramps is making life miserable for an increasing number of people as the illness surges.