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

Renata Sesti-Costa,Cyro von Zuben Negrão,Jacqueline Farinha Shimizu,Alice Nagai,Renata Spagolla Napoleão Tavares,Douglas Adamoski, Wanderley Costa,Marina Alves Fontoura, Thiago Jasso da Silva,Adriano de Barros, Alessandra Girasole,Murilo de Carvalho,Veronica de Carvalho Teixeira,Andre Luis Berteli Ambrosio,Fabiana Granja,José Luiz Proença-Módena,Rafael Elias Marques,Sandra Martha Gomes Dias

Photodiagnosis and Photodynamic Therapy（2022）

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摘要

•We tested 222 and 254 nm irradiation for inactivation of SARS-CoV-2.•254 nm was ∼200-fold more effective than 222 nm in saliva.•A 10.4 mJ/cm2 UV 254 nm dose inactivates SARS-CoV-2 in saliva.•UV 254 is better for sterilizing saliva with SARS-CoV-2 on a surface.•Sterilization of airborne respiratory fluids with SARS-CoV-2 needs evaluation.

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关键词

SARS-CoV-2,Disinfection,UV-C,222 nm,Krypton chlorine lamp

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