title: [Letter: Present influenza-immunity].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000914:Antibodies, Viral / Q000032:analysis; D000956:Antigens, Viral / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D005860:Germany, West; D006801:Humans; D007110:Immunity, Active; D007117:Immunization, Secondary; D007158:Immunologic Techniques; D007223:Infant; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000276:immunology*; D008875:Middle Aged; D011159:Population Surveillance; D013045:Species Specificity
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D007252:Influenza Vaccines
vernacular_title: Zur genenwärtigen Influenza-Immunität