Figure 4
From: Optimized parameters for effective SARS-CoV-2 inactivation using UVC-LED at 275 nm
Verification of SARS-CoV-2 reduction as a function of ultraviolet C (UVC) exposure time and distance. After staining Vero E6 cells with crystal violet, 50% tissue culture infective dose (TCID50) was calculated using the Spearman–Karber method. (A) Determination of viral titer at variable radiation exposure time and distance between the UV light-emitting diode (UV-LED) and plated virus. (B) Determination of viral reduction rate over time at varying UV irradiation distance (*p ≤ 0.05, **p ≤ 0.005, ***p ≤ 0.0005 vs. 50 cm condition).
