El'kin, V M [Prognostic significance of skin reactions to a purified influenza antigen]. [electronic resource] - Klinicheskaia meditsina Feb 1974 - 32-4 p. digital Publication Type: Journal Article ISSN: 0023-2149 Subjects--Topical Terms: Antigens, Viral--administration & dosageHumansHypersensitivity, DelayedInfluenza VaccinesInfluenza, Human--immunologyPrognosisSkin Tests