The incubation period for norovirus is approximately 1-2 days (median period, approximately 33 hours). Symptoms typically last 1-3 days (or longer in immunocompromised individuals). Viral shedding continues after resolution of norovirus symptoms, often lasting 7-10 days. Estimates suggest that approximately 30% of norovirus cases are asymptomatic.
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Cite this: Michael Stuart Bronze. Fast Five Quiz: Norovirus - Medscape - Sep 22, 2020.