カリフォルニア州の牡蠣も危険とのこと。

FDA Issues 4th Oyster Warning In 18 Days: Latest Advisory In Washington Over Norovirus Outbreaks
https://www.forbes.com/sites/antoniopequenoiv/2025/01/02/fda-issues-4th-oyster-warning-in-18-days-latest-advisory-in-washington-over-norovirus-outbreaks/