2022 article
Efficacy of an alcohol-based surface disinfectant formulation against human norovirus
Escudero-Abarca, B. I., Goulter, R. M., Bradshaw, J., Faircloth, J., Leslie, R. A., Manuel, C. S., … Jaykus, L.-A. (2022, February 19). JOURNAL OF APPLIED MICROBIOLOGY.
author keywords: food safety; food virology; human intestinal enteroids; human norovirus; surface disinfection; surface sanitizing; Tulane virus
MeSH headings : Disinfectants / pharmacology; Disinfection / methods; Ethanol; Humans; Norovirus / genetics; Sodium Hypochlorite / pharmacology; Soil; Stainless Steel
TL;DR:
To evaluate the anti‐noroviral efficacy of PURELL® surface sanitizer and disinfectant spray (PSS, an alcohol‐based formulation) using human norovirus GII.4 Sydney and its cultivable surrogate, Tulane virus (TuV, infectivity assay), compared to sodium hypochlorite (NaOCl) solutions.
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open access via onlinelibrary.wiley.com (publisher PDF)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: Web Of Science
Added: March 14, 2022
Abstract Aim To evaluate the anti-noroviral efficacy of PURELL® surface sanitizer and disinfectant spray (PSS, an alcohol-based formulation) using human norovirus GII.4 Sydney [hNoV, by RT-qPCR and human intestinal enteroid (HIE) infectivity assay] and its cultivable surrogate, Tulane virus (TuV, infectivity assay), compared to sodium hypochlorite (NaOCl) solutions. Methods and Results PSS efficacy was evaluated in suspension and on surfaces [stainless steel (SS)] using ASTM methods. Results were expressed as log10 reduction (LR) of genome equivalent copy number (GEC, for hNoV, assayed by RT-qPCR) and plaque forming units (PFU, for TuV, per infectivity assay). In suspension, PSS achieved a 2.9 ± 0.04 LR hNoV GEC irrespective of contact time (30 or 60 s) and soil load (2.5% or 5%). Under all treatment conditions, infectious TuV could not be recovered following exposure to PSS, corresponding to the assay limit of detection (3.1–5.2 log10 PFU). Infectious hNoV could not be detected in the HIE model after exposure to PSS. On SS and 2.5% soil, PSS produced a 3.1 ± 0.1 LR hNoV GEC, comparable to 500 ppm NaOCl for 60 s. With 5.0% soil, PSS produced a 2.5 ± 0.2 LR hNoV GEC, which was similar to 1000–5000 ppm NaOCl for 60 s. Conclusions PSS showed high anti-hNoV efficacy by RT-qPCR and in in vitro (TuV) and ex vivo (HIE) infectivity assays and performed similar to 1000–5000 ppm NaOCl for a 60-s contact time on SS with added soil. Significance and Impact of Study hNoV remains a significant cause of morbidity globally, partly due to its resistance to numerous surface disinfectants. RT-qPCR results from this study indicate PSS efficacy against hNoV is comparable to NaOCl efficacy. Infectivity assays leveraging TuV and the HIE model for hNoV support and confirm loss of virus infectivity. Collectively, these results indicate the product’s ability to inactivate hNoV quickly, which could be beneficial in settings having elevated risk for hNoV transmission.