Stomach Bug Symptoms 2024 Nhs. The main symptoms of norovirus are: Common symptoms of the stomach bug include diarrhea, abdominal pain, nausea, vomiting, and fever.

Known for causing gastroenteritis, an inflammation of the stomach and intestines, norovirus presents with symptoms such as nausea, sudden and profuse. It can be very unpleasant, but usually goes away in about 2 days.