IFNA1 and viral infectious disease: IFNs are grouped into three distinct types, type I IFNs (IFN-α, IFN-β, IFN-κ, IFN-ω, IFN-ν); type II IFNs (IFN-γ); and type III IFNs (IFN-λ), each with features that make them a powerful defense system against viral infections [3].