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NCT Number: NCT01625689

Safety and Immunogenicity of a Single Dose of Intranasal Seasonal Trivalent Live-Attenuated Influenza Vaccine

In this Phase II randomized controlled clinical trial, generally healthy male and female children from 24 through 59 months of age will be enrolled in Kamalapur (Dhaka), Bangladesh. The study is expected to continue for at least 6 months following vaccination. The experimental intervention is Serum Institute of India Ltd's Trivalent, Seasonal Live Attenuated Influenza Vaccine (SIIL LAIV). The study vaccine has been formulated according to WHO recommendations for the 2011-2012 Northern Hemisphere influenza season. The SIIL LAIV is administered in a 0.5 ml intranasal dose (one spray of 0.25 ml per nostril) via a reusable sprayer device and a single-use nozzle that produces a fine mist that is primarily deposited in the nose and nasopharynx. The comparator vaccine will be an inactive placebo identical in appearance to the active vaccine.

The primary study hypothesis is that LAIV is safe and well tolerated by children aged 24 through 59 months in Bangladesh. A secondary hypothesis is that LAIV is immunogenic among children receiving study vaccine as compared to children receiving placebo.

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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

24 month–59 month

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

ICDDR,B Kamalapur

Dhaka, Bangladesh

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Healthy male or female child at least 24 months of age and no older than 59 months of age at the time of study vaccination
  • A child whose parent or guardian's primary residence, at the time of study vaccinations, is within the Kamalapur surveillance site catchment area and who intends to be present in the area for the duration of the trial
  • A child whose parent or legal guardian is willing to provide written informed consent prior to the participant's study vaccination

Exclusion criteria

  • Has any serious chronic disease including progressive neurologic disease, tuberculosis, Down's syndrome or other cytogenetic disorder, or known or suspected disease of the immune system
  • Is receiving immunosuppressive agents including systemic corticosteroids during the two weeks prior to study vaccination
  • Has a history of documented hypersensitivity to eggs or other components of the vaccine (including gelatin, sorbitol, lactalbumin and chicken protein), or with life-threatening reactions to previous influenza vaccinations
  • Is receiving aspirin therapy or aspirin-containing therapy currently or two weeks before
  • Lives in household with somebody currently participating in a respiratory vaccination or antiviral study
  • Has current or past participation (within 2 months of trial enrollment visit) in any clinical trial involving a drug or biologic with activity against respiratory disease
  • Has any condition determined by investigator as likely to interfere with evaluation of the vaccine or be a significant potential health risk to the child

Treatment and study plan

SIIL LAIV (live, trivalent seasonal influenza vaccine)

Biological

Dose: 0.5 mL, The viral strains in seasonal trivalent influenza vaccine (human, live attenuated) are antigenically similar to A/California/7/2009 (H1N1), A/Perth/16/2009 (H3N2) and B/Brisbane/60/2008 Type B, as per the WHO recommended strains for the Northern hemisphere 2011-12 influenza season

Placebo

Biological

Inactive placebo will be identical to SII LAIV in appearance, ingredients, and concentrations, except it will be missing attenuated influenza virus.

Primary outcomes

  1. Number of Participants With Serious Adverse Events (SAEs), All-cause Hospitalizations, and Protocol-defined Wheezing Illness (PDWI) Episodes

    Time frame: 6 months following vaccination

    PDWI: Participants meeting illness criteria, seeking care in health facility, and with wheeze identified by a study physician

    Illness criteria: The presence of one Category A (Fever (>=38°C), tachypnea, danger signs (chest-indrawing, lethargy, cyanosis, inability to drink, convulsions), difficult breathing, noisy breathing, ear pain or discharge) or two Category B findings (Cough, rhinorrhea, sore throat, myalgia/arthralgia, chills, headache, irritability/decreased activity, vomiting)

    Wheeze: Long high-pitched whistling or musical sound on expiration heard by auscultation

  2. Number of Participants With Serious Adverse Events (SAEs), All-cause Hospitalizations, and Protocol-defined Wheezing Illness (PDWI) Episodes

    Time frame: 42 days following vaccination

    PDWI: Participants meeting illness criteria, seeking care in health facility, and with wheeze identified by a study physician

    Illness criteria: The presence of one Category A (Fever (>=38°C), tachypnea, danger signs (chest-indrawing, lethargy, cyanosis, inability to drink, convulsions), difficult breathing, noisy breathing, ear pain or discharge) or two Category B findings (Cough, rhinorrhea, sore throat, myalgia/arthralgia, chills, headache, irritability/decreased activity, vomiting)

    Wheeze: Long high-pitched whistling or musical sound on expiration heard by auscultation

  3. Percentage of Participants With Unsolicited Adverse Events (AEs)

    Time frame: Throughout study period, through at least 6 months following vaccination

  4. Percentage of Participants With Solicited Local and Systemic Reactions

    Time frame: Through 7 days following vaccination

    Local reactions: Nasal discomfort, Runny nose, Stuffy nose, Sneezing, Ear pain

    Systemic Reactions: Cough, Headache, Loss of Appetite, Fever, Irritability, Nausea, Sore throat, Lethargy

Secondary outcomes

  1. The Post-vaccination Anti-influenza Immunologic Response Will be Measured Based on the Type of Immunologic Assay and Categorized by Vaccine Virus Strain, Participant Baseline Serostatus, and Vaccine Allocation

    Time frame: Approximately 21 days post-vaccination

  2. Post Vaccination SIIL LAIV Virus Shedding/Vaccine-take Will be Parameterized by the Percentage of Participants With Detectable Virus by Post Vaccination Day.

    Time frame: 2, 4, and 7 days post-vaccination

  3. Clinical Characteristics of Influenza, Including Influenza Coinfections With Other Bacterial and Viral Respiratory Pathogens, Will be Parameterized as the Percentage of Participants Categorized by Vaccine Allocation

    Time frame: 6 months post-vaccination

  4. Viral Etiologies of Acute Respiratory and Febrile Illness Will be Parameterized as the Percentage of Those With Each Particular Laboratory-confirmed Respiratory Virus Infection Categorized by Vaccine Allocation

    Time frame: 6 months post-vaccination

Sponsors and collaborators

Lead sponsor

PATH Vaccine Solutions

Other

Collaborators

  • International Centre for Diarrhoeal Disease Research, Bangladesh
  • Johns Hopkins Bloomberg School of Public Health

Registry information

Official study title

Assessment of the Safety and Immunogenicity of a Single Dose of Intranasal Seasonal Trivalent Live-Attenuated Influenza Vaccine Among Children Aged 24 Through 59 Months in Bangladesh

Important dates

Study start
2012
Primary completion
2013
Study completion
2013
First posted
Jun 21, 2012
Registry last updated
Jun 1, 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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