Nuòluó bìngdú zhǔyào tōngguò shòu wūrǎn de shíwù chuánbō.
Norovirus is mainly transmitted through contaminated food.
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Phonetic loan from English 'noro-' + 病毒 'virus'. Mainland China also uses 诺如病毒 (nuòrú bìngdú) — same virus, slightly different transliteration. 诺罗 is the Taiwan-leaning form.