CDC Update Keeps Norovirus on the Kitchen Safety Checklist

The U.S. Centers for Disease Control and Prevention has published a fresh update to its NoroSTAT surveillance data, reporting 1,360 suspected and confirmed norovirus outbreaks from participating states between August 1, 2025, and July 9, 2026. That is below the 2,631 outbreaks reported during the same period of the previous season, and the current total remains within the middle 50% of seasonal outbreak levels recorded from 2012 to 2025.

The figures come from a defined group of participating state health departments, not every norovirus illness in the United States. NoroSTAT combines a subset of the CDC’s outbreak and laboratory surveillance systems, so the update is best read as a public-health trend indicator rather than a complete national count. Even so, it offers a useful reminder for anyone who prepares food at home, packs lunches or serves meals to a group: norovirus activity does not disappear when the winter peak has passed.

Norovirus is highly contagious and can spread through contaminated food, water and kitchen surfaces. The CDC says most outbreaks begin with person-to-person transmission, but food can become a vehicle when an infected person handles it. Ready-to-eat foods are especially vulnerable because they are often served without another cooking step.

Why the kitchen still matters

The CDC identifies leafy greens, fresh fruit and shellfish among the foods commonly involved in norovirus outbreaks. These foods are not inherently unsafe, but they are frequently eaten raw or lightly handled after cooking. A single sick food handler can contaminate food, utensils or a work surface, allowing the virus to reach several people at once.

The CDC’s overview of norovirus outbreaks also notes that any food served raw or handled after cooking can be affected. That includes sandwiches, salads, cut fruit, cooked dishes being plated and ice used in drinks.

Four practical controls for home cooks

Keep illness away from food preparation. Anyone experiencing vomiting or diarrhoea should not prepare, serve or touch food for other people. The CDC says people are most contagious while ill and during the first few days after they feel better. Food workers should stay away from food duties for at least 48 hours after symptoms stop.
Wash hands with soap and water. Wash carefully before preparing or eating food and after using the toilet or caring for someone who is sick. Alcohol-based hand sanitiser may be an additional measure, but the CDC says it should not replace handwashing. Gloves do not remove the need to wash hands.
Handle ready-to-eat food with care. Use clean utensils or tongs for foods that will not be cooked again. Keep clean plates, knives and cutting boards separate from anything that may have contacted vomit, faeces, raw shellfish or other contamination.
Clean contamination immediately. If vomiting or diarrhoea occurs in the kitchen, remove exposed food and clean and disinfect affected counters and nearby surfaces. The CDC recommends a chlorine bleach solution at 1,000 to 5,000 parts per million, or another disinfectant registered by the U.S. Environmental Protection Agency as effective against norovirus. Follow the product label and ventilation instructions.

Produce and shellfish deserve extra attention

The CDC’s food-worker fact sheet advises washing fruits and vegetables before preparing or eating them, while taking care not to spread contamination from the sink or surrounding surfaces. Produce that is cut should be refrigerated promptly and protected from raw ingredients and dirty utensils.

Shellfish require particular care. Oysters and other filter-feeding shellfish can carry norovirus when harvested from contaminated water, and quick steaming is not necessarily enough to destroy the virus. Cook shellfish thoroughly and do not serve raw or undercooked oysters to people who may be more vulnerable to severe illness.

These steps do not replace official outbreak notices or product recalls, but they address the everyday points where contamination can move through a kitchen. The CDC’s explanation of how norovirus spreads makes the central lesson clear: contaminated hands, food and surfaces can connect one sick person to many diners. The latest NoroSTAT update is therefore more than a seasonal statistic. It is a timely prompt to keep illness out of food preparation, wash hands properly and treat ready-to-eat food as the final, vulnerable stage of the cooking process.