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Establishment and utilization of an evaluation system for virucidal activity of disinfectants against a coronavirus with apparent applicability to SARS-CoV-2.
Miyaoka, Yu; Kabir, Md Humayun; Hasan, Md Amirul; Yamaguchi, Makiko; Shoham, Dany; Murakami, Harumi; Takehara, Kazuaki.
  • Miyaoka Y; Laboratory of Animal Health, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
  • Kabir MH; Laboratory of Animal Health, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
  • Hasan MA; Laboratory of Animal Health, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
  • Yamaguchi M; Laboratory of Animal Health, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
  • Shoham D; Bar-Ilan University, Begin-Sadat Center for Strategic Studies, Ramat Gan 5290002, Israel.
  • Murakami H; Laboratory of Animal Health, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
  • Takehara K; Laboratory of Animal Health, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
J Vet Med Sci ; 83(1): 48-52, 2021 Jan 14.
Article in English | MEDLINE | ID: covidwho-1029451
ABSTRACT
Decontamination of pathogens on surfaces of substances is very important for controlling infectious diseases. In the present experiments, we tested various disinfectants in aqueous phase as well as on plastic surface carrying a viral inoculum, through dropping and wiping decontamination techniques, comparatively, so as to evaluate virucidal efficacies of those disinfectants toward an avian coronavirus (infectious bronchitis virus IBV). We regard this evaluation system applicable to SARS-CoV-2. The disinfectants evaluated were 0.17% food additive glade calcium hydroxide (FdCa(OH)2) solution, sodium hypochlorite at 500 or 1,000 ppm of total chlorine (NaClO-500 or NaClO-1,000, respectively), NaClO at 500 ppm of total chlorine in 0.17% FdCa(OH)2 (Mix-500) and quaternary ammonium compound (QAC) diluted 500-fold in water (QAC-500). In the suspension test, all solutions inactivated IBV inoculum that contained 5% fetal bovine serum (FBS) under detectable level within 30 sec. In the carrier test, all solutions, except NaClO-500, could inactivate IBV with 0.5% FBS on a carrier to undetectable level in the wiping-sheets and wiped-carriers. We thus conclude that suspension and carrier tests should be introduced to evaluate disinfectants for the field usage, and that this evaluation system is important and workable for resultful selection of the tested disinfectants against avian coronavirus and SARS-CoV-2 on surfaces, particularly on plastic fomite.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Antiviral Agents / Sodium Hypochlorite / Calcium Hydroxide / Infectious bronchitis virus / Disinfectants / SARS-CoV-2 Type of study: Experimental Studies Language: English Journal: J Vet Med Sci Journal subject: Veterinary Medicine Year: 2021 Document Type: Article Affiliation country: Jvms.20-0462

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Antiviral Agents / Sodium Hypochlorite / Calcium Hydroxide / Infectious bronchitis virus / Disinfectants / SARS-CoV-2 Type of study: Experimental Studies Language: English Journal: J Vet Med Sci Journal subject: Veterinary Medicine Year: 2021 Document Type: Article Affiliation country: Jvms.20-0462