Immunogenicity and Safety of the Shenzhen Trivalent Inactivated Influenza Vaccine Versus a Trivalent Influenza Vaccine Comparator in Chinese Subjects 18 to 59 Years
Immunogenicity and Safety of the Shenzhen Trivalent Inactivated Influenza Vaccine Versus a Trivalent Influenza Vaccine Comparator in Chinese Subjects 18 to 59 Years
This was a blind-observer, monocenter, randomized, comparative, Phase IV study designed to
 evaluate the immunogenicity and safety of the Sanofi Pasteur Shenzhen Trivalent Influenza
 Vaccine (SP Shz TIV) versus the Trivalent Influenza Vaccine manufactured by Hualan Biological
 Engineering Inc (Hualan TIV) comparator in healthy Chinese participants aged 18 to 59 years.
This study is designed to demonstrate the non-inferiority of the immune response in terms of
 geometric mean titers (GMTs) and seroconversion rates for the 3 strains (A/H1N1, A-H3N2, and
 B) after a single dose of either the SP Shz TIV or Hualan TIV. Vaccine immune responses will
 be assessed on Day 0 (pre-vaccination) and Day 28 post-vaccination. Solicited reactions will
 be collected from Day 0 up to Day 7 after vaccination, unsolicited non-serious adverse events
 (AEs) will be collected from Day 0 up to Day 28 post-vaccination, and serious AEs will be
 collected from Day 0 up to 6 months post-vaccination.
Inclusion Criteria:

 -  Aged ≥ 18 to 59 years on the day of inclusion

 -  Informed consent form has been signed and dated

 -  Able to attend all scheduled visits and to comply with all trial procedures

 Exclusion Criteria:

 -  Subject is pregnant, or lactating, or of childbearing potential and not using an
 effective method of contraception or abstinence from at least 4 weeks prior to
 vaccination until at least 4 weeks after vaccination. To be considered of non-
 childbearing potential, a female must be post-menopausal for at least 1 year or
 surgically sterile

 -  Participation at the time of study enrollment (or in the 4 weeks preceding the trial
 vaccination) or planned participation during the present trial period in another
 clinical trial investigating a vaccine, drug, medical device, or medical procedure

 -  Receipt of any vaccine or planned receipt of any vaccine within the period from 2
 weeks before trial vaccination to 2 weeks following trial vaccination

 -  Previous vaccination against influenza (in the previous 6 months) with either the
 trial vaccines or another vaccine

 -  Receipt of immune globulins, blood or blood-derived product in the past 3 months

 -  Known or suspected congenital or acquired immunodeficiency; or receipt of
 immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy,
 within the preceding 6 months; or long-term systemic corticosteroid therapy
 (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months)

 -  Known systemic hypersensitivity to any of the vaccines components, or history of a
 life-threatening reaction to the vaccines used in the trial or to a vaccine containing
 any of the same substances

 -  Self-reported thrombocytopenia contraindicating intramuscular vaccination

 -  Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion,
 contraindicating intramuscular vaccination

 -  Deprived of freedom by an administrative or court order, or in an emergency setting,
 or hospitalized involuntarily

 -  Current alcohol abuse or drug addiction

 -  Chronic illness that, in the opinion of the Investigator, is at a stage where it might
 interfere with trial conduct or completion

 -  Moderate or severe acute illness/infection (according to Investigator judgment) on the
 day of vaccination or febrile illness (axillary temperature ≥ 37.1°C). A prospective
 subject should not be included in the study until the condition has resolved or the
 febrile event has subsided

 -  Receipt of oral or injectable antibiotic therapy within 72 hours prior to the first
 blood draw

 -  Identified as an Investigator or employee of the Investigator or study center with
 direct involvement in the proposed study, or identified as an immediate family member
 (i.e., parent, spouse, natural or adopted child) of the Investigator or employee with
 direct involvement in the proposed study