Safety and Immunogenicity of One Dose of Seasonal Trivalent Influenza Virus Vaccine (TIVf, Purified Surface Antigen, Inactivated, Egg Derived) in Adults, Aged 18 Years and Above

Inclusion Criteria:

• Male or female volunteer aged 18 years or older, mentally competent, who gave written informed consent prior to study entry;
• Able to comply with all the study requirements; and
• In good health as determined by the outcome of medical history, physical examination, and clinical judgment of the investigator

Exclusion Criteria:

• Any behavioral or cognitive impairment or psychiatric disease that, in the opinion of the investigator, may have interfered with the subject's ability to participate in the study;

• any serious chronic or acute disease (in the judgment of the investigator) including, but not limited to

  • medically significant cancer (except for benign or localized skin cancer, cancer in remission for ≥10 years, or localized prostate cancer that has been clinically stable for >2 years without treatment)
  • medically significant advanced congestive heart failure (ie, New York Heart Association (NYHA) class III and IV)
  • chronic obstructive pulmonary disease (ie, Global initiative for chronic Obstructive Lung Disease (GOLD) stage III and IV)
  • autoimmune disease (including rheumatoid arthritis and excepting Hashimoto's thyroiditis that had been clinically stable for ≥5 years)
  • diabetes mellitus type I
  • poorly controlled diabetes mellitus type II
  • advanced arteriosclerotic disease
  • history of underlying medical condition such as major congenital abnormalities requiring surgery, chronic treatment, or associated with developmental delay (Down's syndrome), acute or progressive hepatic disease
  • acute or progressive renal disease
  • severe neurological (especially Guillain-Barré syndrome) or psychiatric disorder
  • severe asthma
• history of any anaphylactic reaction and/or serious allergic reaction to any component of the study vaccine;

• a known or suspected (or had a high risk of developing) impairment/alteration of immune function (excluding those normally associated with advanced age) resulting, for example, from:

  • receipt of immunosuppressive therapy (any parenteral or oral corticosteroid or cancer chemotherapy/radiotherapy) within the past 60 days and for the full length of the study,
  • receipt of immunostimulants within the past 6 months,
  • receipt of parenteral immunoglobulin preparation, blood products, and/or plasma derivates within the past 3 months and for the full length of the study, or
  • suspected or known human immunodeficiency virus (HIV) infection or HIV-related disease
• Had known or suspected drug or alcohol abuse within the past 2 years;
• Had bleeding diathesis or conditions associated with prolonged bleeding time that, in the investigator's opinion, would interfere with the safety of the subject;
• was not able to comprehend and to follow all required study procedures for the whole period of the study;
• Had a history or any illness that, in the opinion of the investigator, would pose additional risk to the subjects because of participation in the study;

• Had the following within the past 6 months:

  • had any laboratory-confirmed seasonal or pandemic influenza disease
  • received any seasonal or pandemic influenza vaccine
• Had received any other vaccine within 4 weeks prior to enrollment in this study or who were planning to receive any vaccine during the study;
• Had acute or chronic infections requiring antiviral therapy within the last 7 days;
• Had experienced fever (ie, body temperature [preferably oral] ≥38.0°C) within the last 3 days of intended study vaccination;
• Had been participating in any clinical trial with another investigational product 4 weeks prior to first study visit or intends to participate in another clinical study at any time during the conduct of this study;
• was part of study personnel or has close family members conducting this study;
• Had a body mass index (BMI) >35 kg/m2 (BMI is calculated by dividing the subject's weight in kilograms by the subject's height in meters multiplied by the subject's height in meters);
• was pregnant (confirmed by positive urine pregnancy test) or nursing (breast feeding) or was a female of childbearing potential who refused to use an acceptable method of birth control for the whole duration of the study.