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Relative value (percentage of the virus titer of the negative control sample irradiated for 0 s) of the infectious titer after continuous (current: 0.35 A) or pulsed (current: 0.7 A; duty ratio: 50%; frequency: 1 kHz) DUV-LED irradiation for the UK, South African, and Brazilian strains. The inactivating effects were almost the same between the continuous and pulsed irradiation.
