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Sunday, November 30, 2025

Wastewater Shows Norovirus Spreading Early This Year

New tests on wastewater show that the stomach virus Norovirus is spreading earlier than usual this year. Health experts warn that people should be careful to avoid getting sick.

Researchers say that the amount of Norovirus in sewage across the U.S. has gone up about 69% since October. This rise is happening months before the usual winter peak. Wastewater testing helps track the virus because it can detect the virus people release even before they go to the doctor.

Norovirus spreads very easily. People can get it by touching contaminated surfaces, sharing food or drinks, or being close to someone who is sick.

Symptoms usually appear within 1 to 2 days and include vomiting, diarrhea, stomach pain, nausea, and sometimes fever. The virus can spread even if someone feels healthy.

There is no vaccine or specific treatment for Norovirus. Health officials say the best way to prevent it is to wash hands often with soap and water, clean surfaces, cook food well, and avoid preparing food for others when sick.

Health experts say that wastewater testing gives an early warning, which can help schools, care homes, restaurants, and other public places take precautions.

Early action can reduce the number of people who get sick and protect vulnerable groups like children, older adults, and people with weak immune systems.

Authorities urge everyone to stay alert and practice good hygiene, especially as the virus spreads earlier than normal this year.