Cohort Study to Evaluate Safety and Immunogenicity of Butantan Seasonal Influenza Vaccine


Prospective study to evaluate the safety and immunogenicity of Butantan Influenza seasonal vaccine.

Full Title of Study: “Prospective Cohort Study to Evaluate Safety and Immunogenicity of Butantan Seasonal Influenza Vaccine”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Prospective
  • Study Primary Completion Date: July 2013

Detailed Description

Prospective cohort study to evaluate safety (three days post vaccination) and immunogenicity (measured 21 days post vaccination) of one dose of Butantan Influenza vaccine.


  • Biological: Butantan Fragmented Inactivated Trivalent Influenza Vaccine
    • Butantan Fragmented Inactivated Trivalent Influenza Vaccine

Arms, Groups and Cohorts

  • Healthy adults group
    • Healthy adults aged 18 to 59 years
  • Elderly group
    • Elderly over 60 years old.

Clinical Trial Outcome Measures

Primary Measures

  • Safety assessed by unsolicited local and systemic adverse reactions
    • Time Frame: 3 days
    • Vaccine safety assessed by unsolicited local and systemic adverse reactions up to 3 days post vaccination
  • Antibody response to each of the vaccine´s strains (Immunogenicity)
    • Time Frame: 21 days
    • Antibody response to each of the vaccine´s strains as measured by % seroconversion, and/or increase in the geometric mean of hemagglutination inhibition (HAI) titers and/or % seroprotection.

Participating in This Clinical Trial

Inclusion Criteria

  • Healthy adults, male or female aged 18 to 59 – Elderly aged 60 years completed and above – To be available to participate in the study throughout its duration (approximately 21 days) – To have medical indication to be vaccinated against influenza – To demonstrate intention to participate in the study, as documented by signature in the study´s informed consent form. Exclusion Criteria:

  • Evidence of active neurological, cardiac, pulmonary, hepatic or renal disease as clinical history and/or physical examination (except hypertension under control among the elderly) – Compromised immune system diseases including: HIV, diabetes mellitus, cancer (except basal cell carcinoma) and autoimmune diseases – Behavioral, cognitive or psychiatric disease that in the opinion of the principal investigator or his representative physician, affects the participant ability to understand and cooperate with all study protocol requirements – Abusive usage of alcohol or drugs in the past 12 months that has caused medical, professional or family problems, indicated by clinical history – Known systemic hypersensitivity to eggs or to any component of the vaccine – History of severe adverse reaction after previous administration of an Influenza vaccine within 6 weeks following vaccination – History of Guillain-Barre Syndrome or other demyelinating disease – Diagnosis of asthma with a history of hospitalization in the last six months due to illness – Suspected or confirmed fever in the 3 days prior to vaccination or axillary temperature greater than 37.8 ° C on the day of vaccination – Use of corticosteroids (except topical or nasal) or other immunosuppressive drugs within 42 days before study initiation/baseline. It will be considered immunosuppressive dose of corticosteroids the equivalent to a dose ≥10 mg of prednisone per day for over 14 days – Impaired coagulation due to chronic disease or due to use anticoagulant medication (warfarin or heparin) in the 7 days preceding vaccination – Have received live virus vaccine within 28 days or killed virus vaccine in the last 14 days prior to vaccination, or have a scheduled immunization during the first 21 days after vaccination – Have received influenza vaccine in the past 6 months; – History of asplenia – Have received blood products in the past 6 months, including transfusions or immunoglobulin, or scheduled administration of blood products or immunoglobulin for the first 21 days after vaccination – have a counter indication for Influenza vaccination, including allergy to egg proteins – Use of any investigational product within 42 days before vaccination; – Any other condition that might put in risk the safety/rights of a potential participant or hurdle his/her compliance with this protocol in investigator's opinion or his representative physician.

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • Butantan Institute
  • Provider of Information About this Clinical Study
    • Sponsor

Clinical trials entries are delivered from the US National Institutes of Health and are not reviewed separately by this site. Please see the identifier information above for retrieving further details from the government database.

At, we keep tabs on over 200,000 clinical trials in the US and abroad, using medical data supplied directly by the US National Institutes of Health. Please see the About and Contact page for details.