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Completed

NCT Number: NCT01427309

A Study of Fluzone® High-Dose Vaccine Compared With Fluzone® Vaccine In Elderly Adults

The aim of this study is to determine the efficacy of Fluzone High-Dose compared to standard dose Fluzone for laboratory-confirmed or culture-confirmed influenza caused by influenza types/subtypes that are similar (for laboratory-confirmed) or antigenically similar (for culture-confirmed) to those contained in the respective annual vaccine formulations.

Primary Objective:

* To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to laboratory-confirmed influenza caused by any influenza viral types/subtypes, associated with the occurrence of a protocol-defined influenza-like-illnesses (ILI).

Secondary Objectives:

* To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to laboratory-confirmed influenza, caused by any influenza viral types/subtypes, associated with the occurrence of a protocol-defined ILI. * To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to culture-confirmed influenza, caused by any influenza viral types/subtypes, associated with the occurrence of a protocol-defined ILI. * To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to culture-confirmed influenza caused by viral types/subtypes antigenically similar to those contained in the respective annual vaccine formulations, associated with the occurrence of a modified Centers for Disease Control and Prevention (CDC)-defined ILI. * To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to culture-confirmed influenza caused by any influenza viral types/subtypes, associated with the occurrence of a modified CDC-defined ILI. * To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to culture-confirmed influenza caused by viral types/subtypes antigenically similar to those contained in the respective annual vaccine formulations, associated with the occurrence of a respiratory illness. * To compare the clinical efficacy of Fluzone High-Dose to that of Fluzone in elderly adults, with respect to culture-confirmed influenza caused by any influenza viral types/subtypes, associated with the occurrence of a respiratory illness.

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Key information

Conditions

Influenza Infections Influenza, Human Orthomyxoviridae Infections RNA Virus Infections Respiratory Tract Diseases Respiratory Tract Infections Virus Diseases

Age range

65 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Coquitlam, British Columbia, Canada

Loading trial locations.

About this study

The trial will span 2 influenza seasons. Each study year, participants will be randomized to receive one dose of either Fluzone® High-Dose or Fluzone® vaccine prior to the start of the influenza season and will be followed until the end of each season.

The duration of each participant's participation in the respective study year will be 6 to 8 months, depending on the time of enrollment.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Aged ≥ 65 years on the day of vaccination
  • Informed consent form signed and dated
  • Able to attend all scheduled visits and to comply with all trial procedures.

Exclusion criteria

  • Participation at the time of study enrollment (or in the 4 weeks preceding the trial vaccination), or planned participation during each year of the trial period, in another clinical trial investigating a vaccine, drug, medical device, or medical procedure (Note: Concomitant participation in an observational trial is acceptable)
  • Vaccination against influenza in the 6 months preceding the trial vaccination
  • Systemic hypersensitivity to eggs, chicken proteins, or any of the vaccine components, or a history of a life-threatening reaction to Fluzone High-Dose or Fluzone vaccine or to a vaccine containing any of the same substances
  • Personal history of Guillain-Barré Syndrome
  • Dementia or any other cognitive condition at a stage that could interfere with following the trial procedures
  • Thrombocytopenia contraindicating intramuscular (IM) vaccination, as judged by the investigator
  • Bleeding disorder or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating intramuscular vaccination, as judged by the investigator
  • Current alcohol abuse or drug addiction
  • Subject deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily
  • 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
  • Moderate or severe acute illness with or without fever (oral temperature > 99.0ºF [> 37.2ºC]). If this contraindication exists, vaccination will be deferred until the individual has been medically stable and/or afebrile (temperature ≤ 99.0 ºF [≤ 37.2ºC]) for at least 24 hours
  • Signs and symptoms of an acute infectious respiratory illness. If this exists, vaccination will be deferred until the symptoms resolve.

Treatment and study plan

High Dose Trivalent Inactivated Influenza Vaccine

Biological

0.5 mL Intramuscular

Other names: Fluzone® High Dose

Trivalent Inactivated Influenza Vaccine

Biological

0.5 mL, Intramuscular

Other names: Fluzone®

Primary outcomes

  1. Occurrences of Culture- or Polymerase Chain Reaction (PCR)-Confirmed Influenza Caused by Any Influenza Viral Types/Subtypes, in Association With a Protocol-defined Influenza-like Illness (ILI).

    Time frame: ≥14 days post-vaccination

    Influenza positive cultures were confirmed using direct immunofluorescence techniques with influenza type-specific antibodies. 3 culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney cells, Classic Flu A and B culture using Rhesus Monkey Kidney cells, and R Mix Flu A and B culture). The initial molecular test (PCR) was the validated ProFlu+™ assay by Prodesse, Inc., Waukesha, WI, which had been approved by the Food and Drug Administration through a 510K evaluation for specific detection of Influenza A, B or Respiratory Syncytial Virus.

    A protocol-defined influenza-like illness was determined by the occurrence of at least 1 of the following respiratory symptoms: sore throat, cough, sputum production, wheezing, or difficulty breathing; concurrently with at least one of the following systemic symptoms: fever (defined as temperature > 99.0°F [> 37.2°C]), chills (shivering), tiredness (fatigue), headache, or myalgia (muscle aches).

Secondary outcomes

  1. Occurrences of Culture-confirmed Influenza Caused by Influenza Viral Types/Subtypes That Are Antigenically Similar to Those Contained in the Vaccine Formulations, in Association With a Protocol-defined Influenza-like Illness (ILI)

    Time frame: ≥14 days post-vaccination

    Influenza positive cultures were confirmed by using direct immunofluorescence techniques with influenza type-specific (i.e., for Influenza A and Influenza B) antibodies. For culture confirmation of influenza, 3 different culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney [MDCK] cells, Classic Flu A and B culture using Rhesus Monkey Kidney [RhMK] cells, and R Mix Flu A and B culture. For antigenic similarity determinations, a standard hemagglutination inhibition test using a panel of ferret antisera (ferret antigenicity testing) was used.

  2. Occurrences of Culture-confirmed Influenza Caused by Any Influenza Viral Types/Subtypes, in Association With a Protocol-defined Influenza-like Illness

    Time frame: ≥14 days post-vaccination

    For culture confirmation of influenza, 3 different culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney [MDCK] cells, Classic Flu A and B culture using Rhesus Monkey Kidney [RhMK] cells, and R Mix Flu A and B culture).

    A protocol-defined influenza-like illness (ILI) was determined by the occurrence of at least one of the following respiratory symptoms: sore throat, cough, sputum production, wheezing, or difficulty breathing; concurrently with at least one of the following systemic symptoms: fever (defined as temperature > 99.0°F [> 37.2°C]), chills (shivering), tiredness (fatigue), headache, or myalgia (muscle aches).

  3. Occurrences of Culture-confirmed Influenza Caused by Influenza Viral Types/Subtypes That Are Antigenically Similar to Those Contained in the Vaccine Formulations, in Association With a Modified CDC-defined Influenza-like Illness.

    Time frame: ≥14 days post-vaccination

    Influenza positive cultures were confirmed by using direct immunofluorescence techniques with influenza type-specific antibodies. For culture confirmation of influenza, 3 different culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney cells, Classic Flu A and B culture using Rhesus Monkey Kidney cells, and R Mix Flu A and B culture). For antigenic similarity determinations, a standard hemagglutination inhibition test using a panel of ferret antisera (ferret antigenicity testing) was used.

    The modified Centers for Disease Control and Prevention-defined influenza-like illness is the occurrence of fever (defined as temperature > 99.0°F [> 37.2°C]) with cough or sore throat.

  4. Occurrences of Culture-confirmed Influenza Caused by Any Influenza Viral Types/Subtypes, in Association With a Modified CDC-defined Influenza-like Illness

    Time frame: ≥14 days post-vaccination

    Influenza positive cultures were confirmed by using direct immunofluorescence techniques with influenza type-specific antibodies. For culture confirmation of influenza, 3 different culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney cells, Classic Flu A and B culture using Rhesus Monkey Kidney cells, and R Mix Flu A and B culture). For antigenic similarity determinations, a standard hemagglutination inhibition test using a panel of ferret antisera (ferret antigenicity testing) was used.

    The modified Centers for Disease Control and Prevention-defined influenza-like illness is the occurrence of fever (defined as temperature > 99.0°F [> 37.2°C]) with cough or sore throat.

  5. Occurrences of Culture-confirmed Influenza Caused by Influenza Viral Types/Subtypes That Are Antigenically Similar to Those Contained in the Vaccine Formulations, in Association With a Respiratory Illness

    Time frame: ≥14 days post-vaccination

    Influenza positive cultures were confirmed by using direct immunofluorescence techniques with influenza type-specific antibodies. For culture confirmation of influenza, 3 different culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney cells, Classic Flu A and B culture using Rhesus Monkey Kidney cells, and R Mix Flu A and B culture). For antigenic similarity determinations, a standard hemagglutination inhibition test using a panel of ferret antisera (ferret antigenicity testing) was used.

    Respiratory illness was defined as the occurrence of a new onset (or exacerbation of a pre-existing condition/symptom) of one or more of the following symptoms (that persist for or reoccur after a period of at least 12 hours): sneezing, stuffy or runny nose (nasal congestion), sore throat, cough, sputum production, wheezing, or difficulty breathing.

  6. Occurrences of Culture-confirmed Influenza Caused by Any Influenza Viral Types/Subtypes, in Association With a Respiratory Illness

    Time frame: ≥14 days post-vaccination

    Influenza positive cultures were confirmed by using direct immunofluorescence techniques with influenza type-specific (i.e., for Influenza A and Influenza B) antibodies. For culture confirmation of influenza, 3 different culture methods were utilized for each NP sample (Classic Flu A and B culture using Madin Darby Canine Kidney cells, Classic Flu A and B culture using Rhesus Monkey Kidney cells, and R Mix Flu A and B culture).

    Respiratory illness is defined as the occurrence of a new onset (or exacerbation of a pre-existing condition/symptom) of one or more of the following symptoms (that persist for or reoccur after a period of at least 12 hours): sneezing, stuffy or runny nose (nasal congestion), sore throat, cough, sputum production, wheezing, or difficulty breathing.

Other outcomes

  1. Safety Overview After Injection With Either Fluzone High Dose or Fluzone Vaccine Through the End of Surveillance Period

    Time frame: Day 0 up to Day 240 post-vaccination

    All serious adverse events, including deaths and adverse events (AEs) of special interest (Guillain Barre Syndrome, Bell's Palsy, encephalitis/myelitis, optic neuritis, Stevens Johnson Syndrome, and toxic epidermal necrolysis) were collected.

Sponsors and collaborators

Lead sponsor

Sanofi Pasteur, a Sanofi Company

Industry

Registry information

Official study title

Efficacy Study of Fluzone® High-Dose Vaccine Compared With Fluzone® Vaccine In Elderly Adults

Important dates

Study start
2011
Primary completion
2013
Study completion
2013
First posted
Sep 1, 2011
Registry last updated
Apr 20, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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