Reactivation of Varicella Zoster Virus and Risk of Vascular Disease

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

WITHDRAWN

Study Classification

OBSERVATIONAL

Study Start Date

2015-06-30

Study Completion Date

2019-01-31

Brief Summary

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The purpose of this study is to investigate whether there is an association between stroke or heart attack and reactivation of varicella zoster virus, measured by antibody levels, using linked data from the Health Survey for England and secondary care.

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Detailed Description

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This study will use a case control design to investigate whether adult participants in the Health Survey for England between 2009 and 2013 who were admitted to hospital with either a stroke or heart attack had higher preceding levels of varicella zoster virus antibodies measured in stored serum samples compared to matched controls with no history of heart attack or stroke, controlling for a range of potential demographic, lifestyle and clinical confounders.

This study is funded by the University College London Hospitals Biomedical Research Centre Fast Track grant scheme and has received ethics approval (ref 15/NW/0456).

Conditions

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Varicella Zoster Stroke Transient Ischaemic Attack Acute Myocardial Infarction

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

RETROSPECTIVE

Study Groups

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Cases

Adults (aged 16+) with stored serum samples collected for the Health Survey for England (HSE) between 2009 and 2013, who have a record of hospitalisation for stroke, transient ischaemic attack or myocardial infarction occurring after their participation in the HSE.

No interventions assigned to this group

Controls

Adults (aged 16+) with stored serum samples collected for the Health Survey for England (HSE) between 2009 and 2013, who do not have a record of hospitalisation for stroke, transient ischaemic attack or myocardial infarction and are matched to cases on age, gender and year of participation in the HSE.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Previous participant in the HSE between 2009 and 2013 with stored serum available.
* Either a record of stroke or TIA or MI in linked HES data between 01/01/2009 and 31/12/2013 or selected as a matched control for those with a record of stroke/ TIA/MI in HES data.
* Male or female, aged 16 years or above.