Fig 1. Inactivation of SARS-CoV-2 by chlorous acid water.
The virus was incubated with chlorous acid water with different concentrations for 10 min and the infectivity was measured by the TCID50 method after quenching chloride ions with sodium thiosulphate. The final concentrations in the reaction solution are shown in the graph. The dotted lines indicate the detection limits of the infectivity assay due to the cytotoxicity of chlorous acid water. Experiments were performed in triplicate, and error bars indicate standard error. *: P < 0.05, Mann-Whitney U test, compared with 0 ppm (water).