Ultraviolet germicidal irradiation for filtering facepiece respirators disinfection to facilitate reuse during COVID-19 pandemic: A review

Abstract

Highlights UVGI is one possible method for respiratory disinfection to facilitate the reuse of dwindling supplies. Appropriate dose UVGI exposition could provide enough energy to effectively decontaminate respiratory viral agent and maintenance respirator's integrity for reuse. Further evidence concerning UVGI as a decontamination technique for SARS-COV-2 is needed.

Legal liability facing COVID-19 in dentistry: Between malpractice and preventive recommendations

“…The role of these technologies may be complementary to have good ventilation within the clinic. Several air disinfection systems, or air purifiers, are available in the market like ultraviolet germicidal irradiation (UVGI) devices 33 and the ozone air purification devices. 34 …”

Mask decontamination methods (model N95) for respiratory protection: a rapid review

“…21 However there is not su cient evidence concerning UVGI as a safe decontamination method. 20 To our knowledge, this is the rst rapid review to assess 15 different decontamination methods identi ed in 48 studies, providing an overview of all available methods.…”

“…A recent systematic review evaluated the e cacy and safety of N95 mask decontamination methods from SARS-CoV-2. 18 Other reviews were carried out evaluating speci c methods of decontamination, such as microwave and heat 19 , ultraviolet germicidal irradiation 20 and chemical disinfectants. 21 Concerns about e cacy and safety of methods of decontamination of personal protective equipment is, and will continue to be, relevant for scienti c evidence as there has been likelihood for a second wave of COVID-19 recently.…”

Reply to the comment on Kumar A., Sagdeo A., Sagdeo P. R., Possibility of using ultraviolet radiation for disinfecting the novel COVID-19, Photodiagnosis and photodynamic therapy. 34 (2021) 102234

“…Also, it has been clearly mentioned in the article 2 that UV light exposure can be effective against different strains of airborne viruses for the nonliving things. In -the article we have proposed a model based on the investigations of disinfecting the RNA bases of different viruses (1) , (2) , (3) , (4) . At present, there are many reports in which similar results have been published for the disinfection of COVID-19 virus (3) , (4) , (5) .…”

“…In -the article we have proposed a model based on the investigations of disinfecting the RNA bases of different viruses (1) , (2) , (3) , (4) . At present, there are many reports in which similar results have been published for the disinfection of COVID-19 virus (3) , (4) , (5) . Finally, we appreciate Dr. Panigrahi DPK for this concern and it would be interesting to summarize that each UV light-based inactivation strategy has its pros and cons which should be carefully considered in designing a new microbial control strategy by keeping all humans far away from the enclosed UV exposure chamber through remote operation of such systems.…”