CAD and viral infectious disease: Infectivity of SARS-CoV-2 based on IFA in the presence of 500 μg/mL of CPAV, CPSH, and CPHF before virus infection was 16.5 ± 2.5%, 9.5 ± 3.2%, and 8.7 ± 2.7%, respectively, while it was increased to 47.8 ± 6.6%, 48.7 ± 3.3%, and 45.7 ± 1.4%, respectively when post-treated with CPs after virus infection.