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Hutterite Influenza Prevention Study

27. september 2011 opdateret af: 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.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

4771

Fase

  • Fase 4

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

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

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Influenza
Inactivated Influenza vaccination
Biologisk: 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.
Andre navne:
  • Vaxigrip by Sanofi Pasteur
Placebo komparator: Control
Hepatitis A vaccine
Biologisk: 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.
Andre navne:
  • Avaxim Pediatric by Sanofi Pasteur

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
laboratory-confirmed influenza infection
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years

Sekundære resultatmål

Resultatmål
Tidsramme
Influenza like illness
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
Physician diagnosed otitis media
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
School or work related absenteeism
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
Physician visits for respiratory illness
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
Lower respiratory infection or pneumonia
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
Hospitalizations for LRTI or pneumonia
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
All cause hospitalizations
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
Deaths due to LRTI or pneumonia
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years
All-cause deaths
Tidsramme: Dec to June each year for 3 years
Dec to June each year for 3 years

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

McMaster University

Samarbejdspartnere

Canadian Institutes of Health Research (CIHR)

Efterforskere

  • Ledende efterforsker: Mark B Loeb, MD, McMaster University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. september 2008

Primær færdiggørelse (Faktiske)

1. maj 2011

Studieafslutning (Faktiske)

1. juli 2011

Datoer for studieregistrering

Først indsendt

22. januar 2009

Først indsendt, der opfyldte QC-kriterier

6. april 2009

Først opslået (Skøn)

7. april 2009

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

28. september 2011

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. september 2011

Sidst verificeret

1. september 2011

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • MCT 88113

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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