The average incubation period for norovirus-associated gastroenteritis is 12 to 48 hours, with a median period of approximately 33 hours. Mask would not prevent norovirus as it is not airborne. It is spread through contact with the virus. You need to wash your hands with soap and water to avoid contacting the virus. For info: https://www.cdc.gov/hai/pdfs/norovirus/229110-anorocasefactsheet508.pdf
Answered 12/18/2022
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