UV-C LED-based disinfection can help in the battle against COVID-19

摘要

The disinfection effect of UV radiation arrives by splitting chemical bonds between nucleic acids in the DNA of the virus or bacteria. Thanks to the subsequent formation of thymine dimers, the DNA can no longer duplicate during the cell-division process. This DNA damage is dependent upon the wavelength of the radiation source and the acting dose. Another factor to consider is that different pathogens have different sensitivity to UV-C. For instance, E. coli and staphylococcus are relatively easy to inactivate, while SARS-CoV-2 (which causes COVID-19) requires a dose some 5-17 times higher.