A Study to Evaluate Long-term Impact of VARIVAX Among Children and Adolescents (V210-036)(COMPLETED)

August 17, 2017 updated by: Merck Sharp & Dohme LLC

Fifteen Year Follow-up to Evaluate Long-term Effectiveness of VARIVAX Among Children and Adolescents

The purpose of these continuing post-licensure studies is to evaluate the long-term effectiveness of VARIVAX® [Varicella Virus Vaccine Live (Oka/Merck)] and to assess the impact of the vaccine on the epidemiology of varicella and herpes zoster.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Parents/guardians of the cohort of children vaccinated between 12 and 23 months of age during a six-month period in 1995 (June-November) at KPMCP Northern California were interviewed by telephone at 6-month intervals to ascertain whether their child had varicella or herpes zoster in the 6 months prior to interview. Follow-up continued for a minimum of 14 years after vaccination.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
7585

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

1 year to 1 year (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

15 years prospective follow-up of the original study cohort

Description

Inclusion Criteria:

  • Subject was a member of Kaiser Permanente Northern California, age 12-23 months, received a dose of varicella vaccine between June and November 1995, and parents accepted to participate in 15-year follow-up

Exclusion Criteria:

  • Subjects diagnosed with varicella before study enrollment
  • Subject's parents unable to complete telephone interviews in English, Spanish, or Cantonese

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Varivax vaccinated children
Children who are members of Kaiser Permanente Medical Care Program (KPMCP) and who received a first dose of the varicella vaccine, Varivax, in 1995 between the ages of 12 and 23 months.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants With an Occurrence of Breakthrough Varicella
Time Frame: From 6 weeks to 168 months (14 years) post vaccination
Parents/guardians of Varivax vaccinated children were interviewed every 6 months after vaccination. The number of participants with varicella (referred to as varicella with "any symptoms") were reported by parents during the interview. No medical confirmation of the diagnosis was required.
From 6 weeks to 168 months (14 years) post vaccination
Incidence Rate of Breakthrough Varicella
Time Frame: From 6 weeks to 168 months (14 years) post vaccination
Parents/guardians of Varivax vaccinated children were interviewed every 6 months after vaccination. The number of participants with varicella (referred to as varicella with "any symptoms") were reported by parents during the interview. No medical confirmation of the diagnosis was required.
From 6 weeks to 168 months (14 years) post vaccination

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants With an Occurrence of Herpes Zoster Infection
Time Frame: From 6 weeks to 168 months (14 years) post vaccination
Herpes zoster cases were physician-diagnosed cases.
From 6 weeks to 168 months (14 years) post vaccination
Incidence Rate of Herpes Zoster Infection
Time Frame: From 6 weeks to 168 months (14 years) post vaccination
Herpes zoster cases were physician-diagnosed.
From 6 weeks to 168 months (14 years) post vaccination

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Merck Sharp & Dohme LLC

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Kaiser Permanente

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Roger Baxter, Kaiser Permanente

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 1, 1995

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2010

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2010

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 26, 2010

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 26, 2010

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 1, 2010

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 15, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 17, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • V210-036
  • 2010_014 (Other Identifier: Merck)
  • EP08005.002 (Other Identifier: Merck)

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.

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