title: In reply.
authors.forename: Peter
authors.initials: P
authors.lastname: Wutzler
mesh_terms: D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control*; D032541:Mass Vaccination / Q000706:statistics & numerical data*; D011024:Pneumonia, Viral / Q000453:epidemiology* / Q000517:prevention & control*
chemical_list: D007252:Influenza Vaccines