Inactivated polyvalent influenza virus vaccine--a controlled study of its efficacy in the prevention of respiratory illness in industrial workers.
D000041:Absenteeism; D003365:Costs and Cost Analysis; D006801:Humans; D007252:Influenza Vaccines / Q000627:therapeutic use*; D009784:Occupational Diseases / Q000517:prevention & control*; D009787:Occupational Medicine; D012141:Respiratory Tract Infections / Q000517:prevention & control*; D014611:Vaccination
D007252:Influenza Vaccines