IFNA1 and infection: It has been shown that the replication of RNA viruses, including Sendai virus (SeV), Vesicular stomatitis virus, Newcastle disease virus, Sindbis virus, and Hepatitis C virus (HCV) is suppressed by type I interferon (IFN) (IFN-α and IFN-β) produced rapidly from the cells after infection of viruses [1], [2].