To assess the antiviral effect of CPs on the propagation of SARS-CoV-2 at 24 h post infection, immunofluorescence assay (IFA) was performed using a SARS-CoV-2 spike antibody when Vero E6 cells were treated with 500 μg/mL of CPs, before and after virus infection. The gene discussed is CAD; the disease is infection.