title: [6 years' results of studying the effectiveness of preventive vaccination against influenza in cardiovascular patients at risk].
mesh_terms: D000328:Adult; D000368:Aged; D002318:Cardiovascular Diseases / Q000276:immunology*; D004341:Drug Evaluation; D005260:Female; D005859:Germany, East; D006801:Humans; D007252:Influenza Vaccines / Q000276:immunology*; D007251:Influenza, Human / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012306:Risk; D012621:Seasons
chemical_list: D007252:Influenza Vaccines
vernacular_title: Sechsjährige Effektivitätsergebnisse bei Influenza-Schutzimpfungen von Risiko-Patienten mit Herz-Kreislauf-Erkrankungen.