Trachoma Elimination Follow-up (TEF)

July 13, 2015 updated by: University of California, San Francisco

Trachoma Elimination With Repeated Mass Azithromycin Treatments

The WHO has initiated a program to eliminate blinding trachoma by the year 2020, in large part by mass oral azithromycin distributions. It is not clear how frequently or for how long these treatments are necessary. Here we assess the frequency and duration of treatment.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

40 villages in the Gurage Zone of Ethiopia were randomly assigned to biannual treatment, annual treatment, and a single treatment. Each treatment consisted of a single dose of oral azithromycin to the entire population over the age of 1 year (when the study was started, azithromycin had not yet been approved for ages below 1 year). We assess the prevalence the ocular chlamydia that causes trachoma in the peak prevalence age of 1-5 years at baseline, and 2, 6, 12, 18, and 24 months post treatment. An extension of the study monitors infection at 30 and 36 months post treatment. Untreated villages from the same area are enrolled in a step-wedge design to assess the presence of a secular trend. A random sample of those not within the 1-5 year old age group are examined to assess the prevalence of infection in the entire community.

Study Type

Interventional

Enrollment (Anticipated)

20000

Phase

  • Phase 4

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

  • Ethiopia
      • Addis Ababa, Ethiopia
        • ORBIS-Ethiopia

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

Ages Eligible for Study

1 year and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

Age 1 to 5 years old in a village in the Gurage zone with endemic trachoma

Exclusion Criteria:

Refusal of village chief (for village inclusion), or refusal of parent or guardian (for individual inclusion)

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Single Group Assignment
  • Masking: Single

What is the study measuring?

Primary Outcome Measures

Outcome Measure
The prevalence of ocular chlamydia infection in a village as determined by PCR

Secondary Outcome Measures

Outcome Measure
Clinical active trachoma, as determined by the WHO simplified grading system, by village

Collaborators and Investigators

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

Sponsor

University of California, San Francisco

Investigators

  • Principal Investigator: Thomas M Lietman, MD, Proctor Foundation, UCSF

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

March 1, 2003

Primary Completion (Actual)

April 1, 2005

Study Completion (Actual)

April 1, 2005

Study Registration Dates

First Submitted

September 14, 2005

First Submitted That Met QC Criteria

September 16, 2005

First Posted (Estimate)

September 22, 2005

Study Record Updates

Last Update Posted (Estimate)

July 15, 2015

Last Update Submitted That Met QC Criteria

July 13, 2015

Last Verified

July 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 10-02630

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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