Study on Dynamic Changes of the Maternal Anti-EV71 and Anti-CVA16 Antibody Levels in Infants and Young Children

September 12, 2011 updated by: Jiangsu Province Centers for Disease Control and Prevention
Hand, Foot and Mouth Disease（HFMD）is an infectious disease in infants and young children caused by enterovirus. There was a great outbreak of HFMD in China, 2008, which brought not only panic to the people, but also huge economic loss. Since 2008, HFMD has become one of the category c infectious diseases in China. Studies showed that Human Enterovirus 71 (EV71) and coxsackievirus A 16 (CVA16) are the most common reasons for this disease. And the investigators are going to develop the vaccines for this disease. There is an urgent need to know the dynamic changes of the maternal anti-EV71 and ant-CVA16 level in infants and young children. In April 2007, the investigators started a clinical trial named 'The Safety and Immunogenicity of Recombinant Hepatitis B Vaccines in the Health Neonates' (ClinicalTrials.gov ID: NCT01183611). In that study the investigators already built a cohort of Health Neonates, followed them and obtained the blood serum on the day 0, 30, 210 and 360 after born. So, based on the cohort and blood serum the investigators got, the investigators plan this study to retrospectively investigate their HFMD histories from birth and follow-up for another year to get the information about the incidence of HFMD. The investigators also plan to assay the maternal anti-EV71 and anti-CVA16 antibodies on the day0 and the dynamic changes of antibodies on 1st month, 7th month (day 210), 1st year (day 360) and on October, 2010.

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

Hand, Foot and Mouth Disease（HFMD）is a common infectious disease in infants and young children which is caused by enterovirus. HFMD is one of the category c infectious diseases in China. However a group of picornavirus of enterovirus can caused HFMD, including coxsackievirus A (CVA), coxsackievirus B(CVB), Human Enterovirus 71(EV71), Echovirus(ECHO) and so on, EV71 and CVA16 are the most common reason for this disease. This study is carried out to discover dynamic changes of the maternal anti-EV71 and anti-CVA16 antibody in infants and young children from this study.

Infections of Hand, Foot and Month Disease in infants and young children may lead to a certain proportion of serious cases with various complications or death. The primary aim of this study is to find dynamic changes of the maternal anti-EV71 antibody in infants and young children and to provide basic data for the future application of EV71 vaccines. The second aim of this study is to find dynamic changes of the maternal anti- CVA16 antibody levels in infants and young children The third aim of this study is to discover the risk factors of Hand, Foot and Month Disease and to estimate the burden of disease.Hand, Foot and Mouth Disease（HFMD）is a common infectious disease in infants and young children caused by enterovirus. Since 2008, HFMD has become one of the category c infectious diseases in China. However a group of picornavirus of enterovirus can caused HFMD, including coxsackievirus A (CVA), coxsackievirus B(CVB), Human Enterovirus 71(EV71), Echovirus(ECHO) and so on, EV71 and CVA16 are the most common reason for this disease. This study is carried out to discover dynamic changes of the maternal anti-EV71 and ant-CVA16 in infants and young children from this study.

Infections of Hand, Foot and Month Disease in infants and young children may lead to a certain proportion of serious cases with various complications or death. The primary aim of this study is to find dynamic changes of the maternal anti-EV71 in infants and young children and to provide basic data for the future application of EV71 vaccines. The second aim of this study is to find dynamic changes of the maternal anti-CVA16 levels in infants and young children. The third aim of this study is to discover the risk factors of Hand, Foot and Month Disease and to estimate the burden of disease.

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.
1297

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

  • China
    • Jiangsu
      • Nanjing, Jiangsu, China, 210009
        • Jiangsu Provincial Center for Diseases Control and Prevention

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

2 years to 3 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

The study population are the health infants born after September 2007 in 6 countries in Jinagsu Province.

Description

Inclusion Criteria:

  • The subjects participated in the clinical trial named 'The Safety and Immunogenicity of Recombinant Hepatitis B Vaccines in the Health Neonates'in 2007 (ClinicalTrials.gov ID: NCT01183611).
  • Written informed consent obtained from the parent(s) of the subject.
  • Subjects who the investigator believes will comply with the requirements of the protocol.

Exclusion Criteria:

  • Neonatal jaundice requiring systemic treatment.
  • Major congenital defects or serious chronic illness.
  • Maldevelopment
  • Any condition that in the opinion of the investigator, may interfere with the evaluation of study objectives

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

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.
Health infants (ClinicalTrials.gov ID: NCT01183611)
The subjects participated in the clinical trial 'The Safety and Immunogenicity of Recombinant Hepatitis B Vaccines in the Health Neonates' in 2007 (ClinicalTrials.gov ID: NCT01183611).

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
dynamic changes of the maternal anti-EV71
Time Frame: from birth to 3 years old
dynamic changes of the maternal anti-EV71 in infants and young children
from birth to 3 years old

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
dynamic changes of the maternal anti-CVA16
Time Frame: from birth to 3 years old
dynamic changes of the maternal anti-CVA16 in infants and young children
from birth to 3 years old
incidence of HFMD
Time Frame: from birth to 3 years old
retrospectively investigate their HFMD histories from birth and follow-up for another year to get the information about the incidence of HFMD.
from birth to 3 years old

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.
Jiangsu Province Centers for Disease Control and Prevention

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

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.
October 1, 2010

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, 2011

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.
September 1, 2011

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).
December 4, 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.
December 6, 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.
December 7, 2010

Study Record Updates

Last Update Posted (Estimate)

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 14, 2011

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.
September 12, 2011

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.
September 1, 2011

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.
  • JSVCT002

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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