Norovirus Infections are Surging, Raising Health Concerns

Cases of norovirus, commonly referred to as the "winter vomiting bug," have risen in the United States during this winter season. Although the virus is expected annually during this time of year, this season has seen a notable increase in reported cases.

Known for causing symptoms like vomiting and diarrhea, norovirus infections are typically short-lived, resolving within two days, according to the UK Health Security Agency. While many infected individuals experience unpleasant symptoms, some may carry the virus without showing any symptoms at all, as reported by USA Today. 

Norovirus is recognized as the leading cause of foodborne illness outbreaks in the United States, responsible for about half of all cases, according to the Centers for Disease Control and Prevention (CDC). Food service establishments, such as restaurants, are common settings for these outbreaks, often stemming from infected workers handling food without proper precautions.

The world sees about 685 million norovirus cases every year, reports Cleveland Clinic. Of these, over 200 million affect children. While norovirus is common, the recent spike in cases has raised concerns among health experts and public health officials.

In the United States, the CDC reveals that during the week of Dec. 5, 2024, 91 outbreaks of norovirus were reported, a notable increase from the 69 outbreaks recorded the previous week. By comparison, past years' data show that outbreaks during the first week of December have rarely exceeded 65, illustrating the unprecedented nature of this season's surge, according to CNN Health.

The increase in cases in the United States has raised health alerts and caused concern in Mexico, despite the absence of local cases. To prevent norovirus, the CDC recommends washing hands with soap and water, cooking shellfish at a minimum of 63°C, washing fruits and vegetables, and cleaning kitchen surfaces. It also advises disinfecting areas exposed to vomit or diarrhea and washing contaminated laundry with hot water and detergent.