Do Some Healthy Adults Consistently Have Systemic Reactions to Influenza Vaccines?
January 13, 2016 updated by: Mount Sinai Hospital, Canada
Do Some Healthy Adults Consistently Have Systemic Reactions to Trivalent Inactivated Split Virus Influenza Vaccines?
This study will recruit 35 healthcare workers who had systemic reactions to influenza vaccine the last 2 times they were vaccinated, to ask whether influenza vaccine is indeed associated with systemic reactions in these workers.
Study Overview
Detailed Description
Randomized controlled trials of split virus vaccines in healthy adults have not been able to detect an increase in systemic adverse events compared to control vaccination.
These trials do identify a non-trivial risk of systemic symptoms occurring in the week after both placebo and vaccine.
There is a small population of healthcare workers who report consistent systemic symptoms after split virus vaccination which may occur because a small group of healthy adults have true physical reactions to components of the vaccine or excipients.
If this is true, then alternatives - such as the use of subunit vaccines or live attenuated nasal spray vaccines - might be expected to be better tolerated by these people.
Study Type
Interventional
Enrollment (Actual)
11
Phase
- Phase 4
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Ontario
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Toronto, Ontario, Canada, M5G 1X5
- Mount Sinai Hospital
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-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 69 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Employed or volunteer in a healthcare facility or an ambulatory care setting providing healthcare
- By self report, have had 2 or more doses of trivalent inactivated influenza vaccine (TIIV) in the last 15 years, and after at least the last 2 vaccine doses have had the same systemic adverse event in the 7 days after vaccination, including: fever, chills, myalgia, arthralgia, fatigue, headache, or insomnia;
- Consent to the study, including two injections one month apart, with one being placebo and one a dose of TIIV;
Exclusion Criteria:
- Has a contraindication to TIIV (previous allergic reaction to a dose of vaccine, or Guillain Barre syndrome with onset within 6 weeks of vaccination);
- Has previously received a dose of TIIV for the current influenza season.
- Receipt of another vaccine, or initiation of new medication within 7 days of the study injection (participant may enter the study as long as the gap between other vaccine/initiation of new medication is >7 days);
- Moderate or severe acute illness or active infection or fever (temperature ≥37.8oC) on the day a dose of study medication due (participant may receive injection 48 hours after symptoms have resolved and body temperature has returned to normal without the use of antipyretics.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
Experimental: Vaccine, then placebo
1 injection of trivalent inactivated influenza vaccine, 0.5mL/dose, as approved for use in Canada for season of enrolment followed by 1 injection of normal saline placebo, 0.5mL/dose, 28 days later
|
Licensed trivalent inactivated influenza vaccine
Other Names:
|
|
Experimental: Placebo, then vaccine
1 injection of normal saline placebo, 0.5mL/dose followed by 1 injection of trivalent inactivated influenza vaccine, 0.5mL/dose, as approved for use in Canada for season of enrolment, 28 days later
|
Licensed trivalent inactivated influenza vaccine
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Systemic adverse event
Time Frame: 7 days after each injection
|
Any systemic adverse event, self-reported
|
7 days after each injection
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
October 1, 2014
Primary Completion (Actual)
January 1, 2016
Study Completion (Actual)
January 1, 2016
Study Registration Dates
First Submitted
October 8, 2014
First Submitted That Met QC Criteria
October 8, 2014
First Posted (Estimate)
October 13, 2014
Study Record Updates
Last Update Posted (Estimate)
January 14, 2016
Last Update Submitted That Met QC Criteria
January 13, 2016
Last Verified
September 1, 2015
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 14-0808
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.