title: [Evaluation of the mass vaccinal prevention of influenza in the Petrograd District of Leningrad].
mesh_terms: D004196:Disease Outbreaks / Q000453:epidemiology / Q000517:prevention & control; D005069:Evaluation Studies as Topic; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D012426:Russia; D014505:Urban Population; D014613:Vaccines, Attenuated / Q000008:administration & dosage
chemical_list: D007252:Influenza Vaccines; D014613:Vaccines, Attenuated
vernacular_title: Otsenka massovoĭ vaktsinoprofilaktiki grippa v Petrogradskom raĭone Leningrada.