What is the incubation period for Norovirus outbreaks?

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Multiple Choice

What is the incubation period for Norovirus outbreaks?

Incubation period is the time from exposure to the onset of symptoms. For Norovirus, symptoms typically appear about one to two days after exposure, and outbreak data commonly show illness starting within a 24- to 48-hour window. That range best matches the usual pace of Norovirus onset in exposed groups, making it the most representative choice. The shorter 12–24 hour span is at the very early end and not as typical, while longer ranges like 1–2 weeks or 3–5 days don’t fit how quickly Norovirus usually manifests.

Incubation period is the time from exposure to the onset of symptoms. For Norovirus, symptoms typically appear about one to two days after exposure, and outbreak data commonly show illness starting within a 24- to 48-hour window. That range best matches the usual pace of Norovirus onset in exposed groups, making it the most representative choice. The shorter 12–24 hour span is at the very early end and not as typical, while longer ranges like 1–2 weeks or 3–5 days don’t fit how quickly Norovirus usually manifests.

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