title: [The problem of unceasing variability in influenza virus (author's transl)].
mesh_terms: D000914:Antibodies, Viral; D000917:Antibody Formation; D006801:Humans; D009980:Influenza A virus / Q000276:immunology / Q000302:isolation & purification; D009975:Orthomyxoviridae / Q000145:classification*
chemical_list: D000914:Antibodies, Viral
vernacular_title: Problem neprestanog nijenjanja virusa influence