Summary
Norovirus, also known as the "winter vomiting disease," is seeing an early rise in cases this year, before its usual peak in January. The virus, which causes symptoms like vomiting and diarrhea, is highly contagious and leads to significant healthcare visits and costs each year.
Key Facts
- Norovirus cases are rising earlier than expected in 2025, according to CDC data.
- Normally, norovirus cases increase after the Christmas and New Year period.
- The virus causes symptoms such as vomiting, diarrhea, nausea, and stomach pain.
- Norovirus is responsible for 60% of foodborne illnesses in the U.S.
- Each year, norovirus leads to about 900 deaths and 109,000 hospitalizations.
- The CDC data showed that 13% of norovirus tests were positive for the week of November 15, 2025.
- Young children and adults over age 85 are more likely to be hospitalized due to norovirus.
- Preventive measures include washing hands, avoiding raw shellfish, and cleaning contaminated surfaces.
