When do symptoms appear?

Symptoms of norovirus illness usually begin about 24 to 48 hours after ingestion of the virus, but they can appear as early as 12 hours after exposure.

Show All Answers

1. What are noroviruses?
2. What are the symptoms of illness caused by noroviruses?
3. What is the name of the illness caused by noroviruses?
4. How serious is norovirus disease?
5. How do people become infected with noroviruses?
6. When do symptoms appear?
7. Are noroviruses contagious?
8. How long are people contagious?
9. Who gets norovirus infection?
10. What treatment is available for people with norovirus infection?
11. Can norovirus infections be prevented?