Virucidal Activity of Alcohol-Based Hnd Rub Disinfectants

  • IWASAWA ATSUO
    Department of Bioengineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
  • NIWANO YOSHIMI
    Laboratory for Redox Regulation, Tohoku University Graduate School of Dentistry
  • KOHNO MASAHIRO
    Department of Bioengineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
  • AYAKI MASAHIKO
    Department of Ophthalmology, Saitama National Hospital

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タイトル別名
  • Virucidal Activity of Alcohol-Based Hand Rub Disinfectants

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抄録

  We investigated the virucidal activity of commercially available alcohol-based hand rub products against coxsackievirus A7, B5, feline calicivirus F9, and human adenovirus type 3, type 7, type 8 using susceptible cell lines, Vero cells, CRFK cells, and A549 cells. Fifteen tested hand rub products were ethanol (EtOH) for disinfection (Japanese Pharmacopoeia Grade), two EtOH-based products, one povidone iode-containing product, one alkyldiaminoethylglycine hydrochloride-containing product, six benzalkonium chloride (BAK)-containing products, and four chlorohexidine gluconate (CHG)-containing products. Some active ingredients (BAK, benzetonium chloride, and CHG) were diluted with EtOH to make 0.5% and 0.2% solutions. Virus inactivation rates were calculated after contact with each hand rub product for 10 or 60 seconds. Of the hand rub products tested, only the povidone iode-based product showed antiviral activity superior to that of EtOH against all the strains. EtOH solutions of active ingredients (0.2% and 0.5%) also showed decreased antiviral activity. In conclusion, antiviral activity of all the commercially available alcohol-based hand rub products except that containing povidone idode was dependent on their active ingredients. The povidone idode-containing hand rub product kept its effectiveness even after the dilution with EtOH. Although alcohol-based hand rub products are convenient and suitable for the control of some microbes, they are not generally recommended for the control of viral infections.

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