The norovirus incubation period tends to be 24 to 48 hours, after which symptoms begin to appear. An infection normally lasts only 24 to 60 hours. However, in some cases, dehydration, malnutrition, and even death can occur. These complications are more likely among children, older people, and patients in hospitals and nursing homes with weakened immune systems. Common symptoms include:
- Abdominal pain
- Low-grade fever
Norovirus usually takes its course and goes away on its own after one to three days. It is hard to diagnose using samples in a lab, and so is usually diagnosed based on the combination of common symptoms, including mild fever, vomiting, and short duration of illness.
There is no specific treatment for norovirus. However, it is essential to replenish fluids and minerals, as these are depleted with diarrhea.