For quantitative comparison between studies of the sensitivity of SARS-CoV-2 virus multiplication to IFN antiviral action, it is necessary to know the type and subspecies of IFN utilized; the time and concentration of IFN treatment; the host cell line used for measurement of infectious virus yield reduction; and the conditions of the virus growth assay including multiplicity of infection and whether the assay was single cycle. The gene discussed is IFNA1; the disease is infection.