Can alcohol kill norovirus?
Dec 02, 2025
Source: Cainiu Health
Dr. Huang Yuhong
Introduction
Alcohol can kill norovirus, but only when using 75% medical-grade alcohol for at least 30 seconds; low-concentration alcohol or brief exposure cannot effectively inactivate the virus. If symptoms such as vomiting, diarrhea, or fever—suggestive of norovirus infection—occur, prompt medical attention is recommended. Norovirus exhibits strong environmental resistance and high tolerance to common disinfectants.
Alcohol can kill norovirus, but it must be 75% medical-grade alcohol and remain in contact for at least 30 seconds. Low-concentration alcohol or brief exposure cannot effectively inactivate the virus. If symptoms such as vomiting, diarrhea, or fever—suggestive of norovirus infection—occur, prompt medical attention is recommended.
Norovirus exhibits strong environmental resistance and high tolerance to common disinfectants. However, 75% medical alcohol can effectively destroy the virus by disrupting its envelope structure and altering nucleic acid activity, making it a suitable choice for disinfection in households and public settings.
It should be noted that alcoholic beverages such as baijiu and beer typically contain less than 60% alcohol, which is insufficient for viral inactivation. During disinfection, ensure surfaces are thoroughly wetted with alcohol to prevent incomplete disinfection due to rapid evaporation after spraying. Special attention should be given to frequently touched areas such as door handles and tableware.
Routinely wipe frequently used items with 75% alcohol, wash hands thoroughly with running water and soap before meals and after using the toilet, separate raw and cooked foods during preparation, avoid consuming raw, cold, or unclean food, and maintain good indoor ventilation to reduce the risk of norovirus infection.
