yes a person can have a gastointestinal virus without vomiting or diarrhea but those symptoms are typically the things you get. if you had this virus before or a similar virus you may only have a mild infection with nausea. you cannot definitively diagnose a norovirus by symptoms alone since everyone responds to a viral infection differently.
is it possible to have a stomach virus without vomiting or diarrhea? . every so often i experience nausea fatigue and stomach pain as if i had a stomach virus--could this just be the way my body expresses the norovirus?