Method Of Treatment Using Interferon-Tau

A composition for use in preparation of a medicament for treating a condition in human subject responsive to interferon tau therapy, the condition selected from an autoimmune condition, cancer, or a viral infection, said composition comprising interferon-tau formulated for oral administration to the intestinal tract of the subject in an amount effective to produce an initial measurable increase in the subject's blood 2′, 5′-oligoadenylate synthetase (OAS) level, relative to the blood OAS level in the subject in the absence of interferon-tau administration, wherein said interferon-tau is administered to the intestinal tract of the subject in such effective amount, on a regular basis of at least several times per week, for a period of at least one month, independent of changes in the subject's blood OAS level.