Hutterite Influenza Prevention Study
27 september 2011 uppdaterad av: Mark Loeb, McMaster University
Does Vaccinating Health Hutterite Children Against Influenza Prevent Influenza in Other Hutterite Colony Members: A Randomized Cluster Trial
The goal of this randomized clinical trial is to determine whether immunizing children in Hutterite colonies with inactivated influenza vaccine can prevent influenza and its complications in other colony members.
Furthermore, the study will assess the indirect benefit to Hutterites at high risk of complications.
The study is a blinded, cluster randomized controlled trial among Hutterite colonies to test the hypothesis that high immunization rates (>70%) of healthy children with inactivated influenza vaccine reduces transmission of influenza to other colony members.
Randomization of these homogeneous, moderately sized colonies where there is regular spread facilitated by a communal lifestyle, but limited re-introduction because of relative isolation from outside community, represents a unique opportunity to test the hypothesis of indirect benefit under close to ideal conditions.
The primary outcome will be laboratory-confirmed influenza.
Secondary outcomes include influenza-like illness, otitis media, physician visits, antimicrobial prescriptions, absenteeism, lower respiratory tract infection, hospitalizations, and death.
Studieöversikt
Status
Avslutad
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Colonies will be enrolled in September 2008.
Healthy Hutterite Children will be vaccinated in October, in each year of the study (2008, 2009, & 2010)
Influenza Surveillance phase will begin around December-January of each year.
- All study outcomes will be collected during the Surveillance phase of the study from Dec to June for 3 years.
- Outcomes will be collected when research nurses visit the colonies. A research nurse will visit enrolled colonies twice a week during the surveillance phase and review study diaries and obtain swabs from participants with symptoms of influenza.
Studietyp
Interventionell
Inskrivning (Faktisk)
4771
Fas
- Fas 4
Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
- Barn
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Ja
Kön som är behöriga för studier
Allt
Beskrivning
Group A:
Inclusion Criteria:
- Hutterites other than the healthy children who will be immunized. Although this category as a whole will be used to assess indirect benefit of the vaccine in the main analysis, Hutterites at high risk for influenza complications within this category will be assessed in a separate analysis. These are defined as anyone in one or more of the following groups:
- individuals aged ≥ 65 years
- children 23 months of age or less
anyone with ≥ 1 of the following conditions severe enough to require regular medical follow-up or hospital care:
- chronic cardiac or pulmonary disorders (including bronchopulmonary dysplasia, cystic fibrosis, and asthma)
- diabetes mellitus and other metabolic diseases
- cancer
- immunodeficiency
- immunosuppression (due to underlying disease and/or therapy)
- renal disease
- anemia
- hemoglobinopathy
- any condition that can compromise respiratory function or the handling of respiratory secretions or that can increase the risk of aspiration.
Exclusion Criteria:
- There are no exclusion criteria for this category of participants.
Group B:
Inclusion Criteria:
- Healthy children aged 36 months to 15 years who will be immunized as part of the intervention.
Exclusion Criteria:
- Anaphylactic reaction to a previous dose of influenza vaccine
- Anaphylactic reaction to hepatitis A vaccine
- Anaphylactic reaction to neomycin
- Known IgE-mediated hypersensitivity to eggs manifested as hives
- Swelling of the mouth and throat, difficulty in breathing, hypotension, or shock
- Guillain-Barré syndrome within eight weeks of a previous influenza vaccine.
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Trippel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: Influenza
Inactivated Influenza vaccination
|
Influenza vaccination- 0.5 mL.
Children under 9 who have never received a influenza vaccine will receive a 2nd dose (0.5 mL) 4 weeks later.
Andra namn:
|
|
Placebo-jämförare: Control
Hepatitis A vaccine
|
Hepatitis vaccination- 0.5 mL.
Children under 9 who have never received a influenza vaccine will receive a 2nd dose ( saline- 0.5 mL) 4 weeks later.
Andra namn:
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
laboratory-confirmed influenza infection
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
Sekundära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
Influenza like illness
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
Physician diagnosed otitis media
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
School or work related absenteeism
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
Physician visits for respiratory illness
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
Lower respiratory infection or pneumonia
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
Hospitalizations for LRTI or pneumonia
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
All cause hospitalizations
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
Deaths due to LRTI or pneumonia
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
|
All-cause deaths
Tidsram: Dec to June each year for 3 years
|
Dec to June each year for 3 years
|
Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Sponsor
Samarbetspartners
Utredare
- Huvudutredare: Mark B Loeb, MD, McMaster University
Publikationer och användbara länkar
Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.
Allmänna publikationer
- Wang B, Russell ML, Moss L, Fonseca K, Earn DJ, Aoki F, Horsman G, Caeseele PV, Chokani K, Vooght M, Babiuk L, Webby R, Walter SD, Loeb M. Effect of Influenza Vaccination of Children on Infection Rate in Hutterite Communities: Follow-Up Study of a Randomized Trial. PLoS One. 2016 Dec 15;11(12):e0167281. doi: 10.1371/journal.pone.0167281. eCollection 2016.
- Loeb M, Russell ML, Fonseca K, Webby R, Walter SD. Comparison of multiple estimates of efficacy for influenza vaccine. Vaccine. 2011 Dec 9;30(1):1-4. doi: 10.1016/j.vaccine.2011.10.069. Epub 2011 Nov 7.
- Loeb M, Russell ML, Moss L, Fonseca K, Fox J, Earn DJ, Aoki F, Horsman G, Van Caeseele P, Chokani K, Vooght M, Babiuk L, Webby R, Walter SD. Effect of influenza vaccination of children on infection rates in Hutterite communities: a randomized trial. JAMA. 2010 Mar 10;303(10):943-50. doi: 10.1001/jama.2010.250.
Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 september 2008
Primärt slutförande (Faktisk)
1 maj 2011
Avslutad studie (Faktisk)
1 juli 2011
Studieregistreringsdatum
Först inskickad
22 januari 2009
Först inskickad som uppfyllde QC-kriterierna
6 april 2009
Första postat (Uppskatta)
7 april 2009
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
28 september 2011
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
27 september 2011
Senast verifierad
1 september 2011
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- MCT 88113
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .
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