Norovirus cases are experiencing a significant surge across the United States this winter, as USA Today and The Hill report. According to the Centers for Disease Control and Prevention (CDC), there were 91 outbreaks documented during the week of December 5, showing a rise from 69 outbreaks in the last week of November. This increase is particularly noteworthy as it exceeds the historical averages for this time of year, which typically see no more than 65 outbreaks.

The state of Minnesota has reported double the average number of norovirus cases in December, reinforcing trends seen nationwide. The norovirus, also known as the stomach flu, is the leading cause of gastroenteritis, resulting in severe symptoms including vomiting, diarrhea, nausea, and stomach pain. Symptoms typically manifest within 12 to 47 hours post-exposure and usually resolve within one to three days, although individuals may remain contagious for several days after symptoms subside.

As reported, norovirus is responsible for roughly 58% of foodborne illnesses in the U.S. Furthermore, the CDC's data indicates that outbreaks are most prevalent from November to April. The environment in which norovirus spreads includes **crowded places** such as cruise ships, daycare centers, and even nursing homes, where close contact is unavoidable.

The illness is not only affecting individuals but has also been linked to large outbreaks, such as those reported from food events. For instance, over 80 people fell ill after consuming contaminated oysters at a recent event in Los Angeles. Similarly, multiple cruise ships have reported cases of norovirus this month, with guests and crew developing symptoms of the infection.

While norovirus can impact anyone, certain demographics—such as children under five, seniors over 85, and immunocompromised individuals—are at heightened risk for severe illness. The CDC highlights the importance of maintaining hygiene to prevent the spread, emphasizing proper handwashing with soap and water as the most effective method, as typical hand sanitizers may not adequately kill the virus.

In conclusion, as norovirus cases continue to rise, public health officials urge individuals to remain cautious and implement preventive measures to minimize the risk of transmission. Increased awareness about the symptoms and prudent hygiene practices are essential to mitigating the impacts of this highly contagious virus.