Fatemeh Mohammadi Tavileh - Student Research Committee, Health College, Kermanshah University of Medical Sciences, Kermanshah, Iran
Elahe Tardideh - MSc student, Student Research Committee, Health College, University of Medical Sciences, Kermanshah, Iran.
Elahe Tardideh - Student Research Committee, Health College, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Farshad Nadri - Student Research Committee, Health College, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Seyedeh Somayeh Kazemi - Health Network, Mazandaran Uni- versity of Medical Sciences, Chaloos, Iran.

Aim: The global outbreak of the new coronavirus (SARS-COV۲) threatens human health around the world. The presence of the SARSCOV۲ virus on surrounding surfaces and protective equipment such as respirators increases the transmission of the virus. One way to reduce the spread of the virus is through disinfection techniques. The aim of this study is to review the investigations carried out in the area of the ultraviolet (UV) effect on the SARS-CoV۲ virus, the UV disinfection spectra, the effect of this radiation on surface disinfection and the N۹۵ respirator. Method and Materials: The search was carried out from December ۲۰۱۹ to August ۲۰۲۰ in the databases including Scopus, Science Direct, Web of Science and Pubmed with the keywords UV and Covid۱۹, UV and Sars-Cov۲, UV and Covid۱۹ as well as UV and sars-Cov۲. By checking the titles and abstracts of the articles, based on the defined inclusion and exclusion criteria, related articles were separated from the irrelevant ones and also duplicate articles were eliminated. Findings: This study showed that UV light generally has antiseptic properties and were effective against SARS-Cov۲ virus, so it could eliminate Covid-۱۹ virus and similar types of viruses on the surfaces and respiratory masks. The typical wavelength used in the studies was ۲۵۴ nm. Conclusion: The results of this study revealed that UV can be used to disinfect surfaces, respiratory masks and it helps us choose appropriate spectra of this radiation, especially during Covid-۱۹ pandemic, however, the current studies in this field are insufficient and further studies are needed.

Ultra-Violet Radiation, Disinfection, Wave-Length, Covid-۱۹.