title: [Influenza--preventive measures without effect?].
authors.forename: B M
authors.initials: BM
authors.lastname: Andersen
mesh_terms: D003140:Communicable Disease Control; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000517:prevention & control*; D009664:Norway
chemical_list: D007252:Influenza Vaccines