Norovirus

Detailed description

Noroviruses are non-enveloped RNA viruses belonging to the Caliciviridae family. They are found worldwide and are a common cause of acute gastrointestinal illnesses. Illnesses and outbreaks are particularly common during the winter months.

The viruses are primarily transmitted through contact with virus-contaminated feces or vomit, as well as through contaminated hands, surfaces, food, or water. Tiny virus-containing droplets released during vomiting can also contribute to transmission. Typical symptoms include sudden onset of vomiting, diarrhea, nausea, and abdominal pain. The illness usually resolves on its own within a few days. However, fluid loss can lead to dehydration, which can be particularly dangerous for young children, older adults, and immunocompromised individuals.