Figure 1.

Infectivity of SARS-CoV-2 was significantly reduced by an exposure to tea. Virus was treated with ×1 concentration of the indicated tea/DMEM for 1 min, immediately followed by a 10-fold serial dilution and infection into VeroE6/TMPRSS2 cells to measure TCID₅₀ values as described in the Materials and Methods. Scheme of experiments (a) and virus titer of each sample (b) are shown. Values are means ± S.D. (n = 3). ** p < 0.01 vs. Control by Tukey’s multiple comparison test.