A New Synergistic Strategy for Virus and Bacteria Eradication: Towards Universal Disinfectants

Abstract

In response to the COVID-19 and monkeypox outbreaks, we present the development of a universal disinfectant to avoid the spread of infectious viral diseases through contact with contaminated surfaces. The sanitizer, based on didecyldimethylammonium chloride (DDAC), N,N-bis(3-aminopropyl)dodecylamine (APDA) and γ-cyclodextrin (γ-CD), shows synergistic effects against non-enveloped viruses (poliovirus type 1 and murine norovirus) according to the EN 14476 standard (≥99.99% reduction of virus titer). When a disinfectant product is effective against them, it can be considered that it will be effective against all types of viruses, including enveloped viruses. Consequently, “general virucidal activity” can be claimed. Moreover, we have extended this synergistic action to bacteria (P. aeruginosa, EN 13727). Based on physicochemical investigations, we have proposed two independent mechanisms of action against bacteria and non-enveloped viruses, operating at sub- and super-micellar concentrations, respectively. This synergistic mixture could then be highly helpful as a universal disinfectant to avoid the spread of infectious viral or bacterial diseases in community settings, including COVID-19 and monkeypox (caused by enveloped viruses).

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“…Surface disinfectants with proven ʽvirucidal activity against enveloped virusesʼ can be used for disinfection [33] . Chemothermal reprocessing with a viruseffective, VAH-listed or RKI-listed procedure is required for laundry reprocessing in the clinical and nursing environment [34] .…”

Viricidal Activity of Thermoplastic Polyurethane Materials with Silver Nanoparticles

“…The viability of the viral particles on fomites depends on the stability of their components and structural arrangements, which can be affected by environmental factors occurring over time such as humidity, temperature and irradiation [9]. For this reason, DNA and non-enveloped viruses are usually more resistant to adverse environments [18,19]. Associated with this, the chemical nature of the fomites also plays an important, sometimes crucial, role.…”