UV 254 nm is more efficient than UV 222 nm in inactivating SARS-CoV-2 present in human saliva.

ABSTRACT: Ultraviolet (UV) light can inactivate SARS-CoV-2. However, the practicality of UV light is limited by the carcinogenic potential of mercury vapor-based UV lamps. Recent advances in the development of krypton chlorine (KrCl) excimer lamps hold promise, as these emit a shorter peak wavelength (222 nm), which is highly absorbed by the skin's stratum corneum and can filter out higher wavelengths. In this sense, UV 222 nm irradiation for the inactivation of virus particles in the air and surfaces is a potentially safer option as a germicidal technology. However, these same physical properties make it harder to reach microbes present in complex solutions, such as saliva, a critical source of SARS-CoV-2 transmission. We provide the first evaluation for using a commercial filtered KrCl excimer lig

SUBMITTER: Sesti-Costa R 

PROVIDER: S-EPMC9281457 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature