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Long-term Effectiveness of the Live Attenuated Herpes Zoster Vaccine

Long-term Effectiveness of the Live Attenuated Herpes Zoster Vaccine in Adults Aged 40 Years or Older: a Multicenter, Retrospective Cohort Study Based on Phase III Trial

This is a multicenter retrospective cohort study to evaluate the long-term effectiveness of the live attenuated herpes zoster vaccine within 6 years after vaccination. We plan to select 24,740 participants who were non-herpes zoster cases in the modified Full Analysis Set for Efficacy (E-mFAS) from the Phase III Clinical Trial (NCT04334577) of the live attenuated herpes zoster vaccine manufactured by Changchun BCHT Biotechnology Co. conducted during 2020-2021. In the original Phase III Clinical Trial, the participants were randomly assigned to the vaccine group and the placebo group at a 1:1 ratio to receive one dose of the live attenuated herpes zoster vaccine (with varicella-zoster virus >=4.3 lg PFU per 0.5 mL dose) or one dose of placebo (with no varicella-zoster virus component), respectively. This study uses a stage-based design. In Stage 1, participants originally assigned to the vaccine group and those originally assigned to the placebo group will be compared to assess the cumulative incidence of herpes zoster from the end of the original Phase III Clinical Trial in July 2021 to the marketing authorization of the vaccine in China in June 2023. In Stage 2, after marketing authorization of the vaccine in China in June 2023, a large proportion of the participants originally assigned to the placebo group received catch-up vaccination and thereby formed a catch-up vaccination group. These stage-specific groups will be compared to evaluate the relative waning of protection in participants who received catch-up vaccination compared with participants vaccinated in the original Phase III Clinical Trial. In addition, among participants originally assigned to the placebo group who received catch-up vaccination, the incidence of herpes zoster during the post-catch-up vaccination period will be compared with the incidence during their earlier placebo period before catch-up vaccination, in order to evaluate the relative risk of herpes zoster under vaccinated versus placebo exposure. For this study, telephone surveys will be conducted using a standardized questionnaire to collect data on herpes zoster occurrence from participants, with verbal informed consent obtained prior to the survey. Face-to-face interviews will also be conducted to verify reported herpes zoster cases. Moreover, their past medical history and lifestyle information will be collected.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Studietype

Observationeel

Inschrijving (Geschat)

24740

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

    • Jiangsu
      • Nanjing, Jiangsu, China
        • Werving
        • Jiangsu Provincial Center for Diseases Control and Prevention (Jiangsu Provincial Academy of Preventive Medicine)
        • Contact:

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Ja

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

We plan to select 24,740 participants who were non-herpes zoster cases in the modified Full Analysis Set for Efficacy (E-mFAS) from the Phase III Clinical Trial (NCT04334577) of the live attenuated herpes zoster vaccine manufactured by Changchun BCHT Biotechnology Co. conducted during 2020-2021.

Beschrijving

Inclusion Criteria:

  1. Individuals included in the E-mFAS from the Phase III Clinical Trial (NCT04334577) of the live attenuated herpes zoster vaccine produced by Changchun BCHT biotechnology Co. conducted during 2020-2021.
  2. Individuals who were able to complete the study with verbal informed consent.

Exclusion Criteria:

  1. Individuals who developed herpes zoster during the original Phase III Clinical Trial follow-up period.
  2. Individuals who were known to have died before the retrospective study.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Interventie / Behandeling
The vaccine group.
This vaccine was produced by Changchun BCHT Biotechnology Co.
After market authorization in June 2023, part of the participants originally assigned to placebo received catch-up vaccination with the marketed live attenuated herpes zoster vaccine produced by Changchun BCHT Biotechnology Co.
The placebo group.
This vaccine was produced by Changchun BCHT Biotechnology Co.
After market authorization in June 2023, part of the participants originally assigned to placebo received catch-up vaccination with the marketed live attenuated herpes zoster vaccine produced by Changchun BCHT Biotechnology Co.
This placebo was produced by Changchun BCHT Biotechnology Co. for use in the Phase III Clinical Trial.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
Incidence of Herpes Zoster comparing participants originally assigned to the vaccine group and participants originally assigned to the placebo group
Tijdsspanne: From the end of the Phase III Clinical Trial in July 2021 to June 2023, before catch-up vaccination among placebo participants
From the end of the Phase III Clinical Trial in July 2021 to June 2023, before catch-up vaccination among placebo participants

Secundaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
Incidence of Herpes Zoster comparing participants in the original placebo group who received catch-up vaccination and participants originally assigned to the vaccine group under continued follow-up
Tijdsspanne: From June 2023 to the survey date in 2026
From June 2023 to the survey date in 2026
Incidence of Herpes Zoster among participants originally assigned to the placebo group, comparing the post-catch-up vaccination period with their earlier placebo period before catch-up vaccination
Tijdsspanne: From July 2021 to June 2023 for the earlier placebo period, and from June 2023 to the survey date in 2026 for the post-catch-up vaccination period
From July 2021 to June 2023 for the earlier placebo period, and from June 2023 to the survey date in 2026 for the post-catch-up vaccination period

Andere uitkomstmaten

Uitkomstmaat
Tijdsspanne
Incidence of Herpes Zoster stratified by sex
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026
Incidence of Herpes Zoster stratified by age group
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026
Incidence of Herpes Zoster stratified by chronic disease history
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026
Incidence of Herpes Zoster stratified by immunosuppressive treatment history
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026
Incidence of Herpes Zoster stratified by alcohol use
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026
Incidence of Herpes Zoster stratified by smoking status
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026
Incidence of Herpes Zoster stratified by physical activity or physical labor
Tijdsspanne: From July 2021 to the survey date in 2026
From July 2021 to the survey date in 2026

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Onderzoekers

  • Hoofdonderzoeker: Pengfei Jin, Jiangsu Provincial Center for Diseases Control and Prevention (Jiangsu Provincial Academy of Preventive Medicine)

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

6 maart 2026

Primaire voltooiing (Geschat)

30 juni 2026

Studie voltooiing (Geschat)

30 juni 2026

Studieregistratiedata

Eerst ingediend

7 mei 2026

Eerst ingediend dat voldeed aan de QC-criteria

7 mei 2026

Eerst geplaatst (Werkelijk)

13 mei 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

13 mei 2026

Laatste update ingediend die voldeed aan QC-criteria

7 mei 2026

Laatst geverifieerd

1 mei 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • JSIIT006

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

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