The Effect of Oral Azithromycin in the Treatment of Chlamydial Conjunctivitis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01178762
Recruitment Status : Completed
First Posted : August 10, 2010
Results First Posted : October 27, 2010
Last Update Posted : October 27, 2010
Information provided by:
National Taiwan University Hospital

August 31, 2008
August 10, 2010
August 12, 2010
October 27, 2010
October 27, 2010
September 2007
November 2007   (Final data collection date for primary outcome measure)
Total Number of Participants With Negative Chlamydia Direct Fluorescent Antibody (DFA) Test Results After Oral Azithromycin Treatments [ Time Frame: 4 weeks, 8 weeks and 12 weeks after the first dose of the medication ]
We performed direct fluorescent antibody (DFA) tests for Chlamydia by swabbing across the lower and upper tarsal conjunctiva four times after topical application of 0.5% proparacaine. All of the DFA tests were examined by the same experienced microbiologist who was masked to the identities and clinical conditions of the patients. Each DFA slide was read under a fluorescent microscope and was observed for discrete fluorescent chlamydial elementary bodies (EBs).The DFA test was considered positive if above 10 EBs were counted per high-power field.
negative Chlamydia direct fluorescent antibody (DFA) test results [ Time Frame: 4 weeks 8 weeks and 12 weeks later ]
Complete list of historical versions of study NCT01178762 on Archive Site
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The Effect of Oral Azithromycin in the Treatment of Chlamydial Conjunctivitis
The Effect of Oral Azithromycin in the Treatment of Chlamydial Conjunctivitis
Chlamydia trachomatis is one of the major causes of sexually transmitted disease and also the leading infectious cause of blindness in the world.Treatment of C. trachomatis eye infection has involved for a long time. The efficacy of single dose azithromycin has already been demonstrated as effective in the treatment of both trachoma and adult inclusion conjunctivitis.However, in our clinical experience, some patients of chlamydial conjunctivitis may require augmented single dose azithromycin treatments before C. trachomatis is eradicated. In this way, we would like to known the efficacy of single dose and augmented single dose azithromycin in the treatment of chlamydial conjunctivitis.
Medical records of patients with clinically suspected chlamydial conjunctivitis between January 1, 2006 and December 31, 2006 at one cornea specialist's (Y.C.H) out-patient clinic were retrospectively reviewed. At this clinic, patients of both sexes with acute, chronic or recurrent follicular conjunctivitis with the symptoms and signs of chlamydial conjunctivitis suspected were tested for Chlamydia direct fluorescent antibody (DFA) tests and arranged for next time out-patient clinic follow up 1-2 weeks later. The patients who attended the follow up visit with positive DFA results were treated with oral azithromycin. These patients received a single dose oral azithromycin (400mg~1000mg, according to their age and body weight) once a week for consecutive two weeks. Repeated DFA examinations were performed 4 to 6 weeks later. If the DFA examinations still showed positive results, augmented single dose oral azithromycin once a week for one week was given again till the DFA showed negative results. The occurrence and frequency of adverse events recorded in the medical charts were reviewed as well.
Not Applicable
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Chlamydial Conjunctivitis
Drug: Azithromycin
Oral Azithromycin in the Treatment of Chlamydial Conjunctivitis
Other Name: zithromax(Pfizer)
Experimental: Observation
Intervention: Drug: Azithromycin
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
December 2007
November 2007   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Patients of clinically chlamydial conjunctivitis suspected and proven by direct fluorescent antibody(DFA)results

Exclusion Criteria:

  • Patients with pregnancy or lactation, history of allergy to macrolides, evidence or history of hepatic, renal, hematological or cardiovascular disease
Sexes Eligible for Study: All
Child, Adult, Senior
Contact information is only displayed when the study is recruiting subjects
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Yan-Ming Chen / Yu-Chih Hou, National Taiwan University Hospital
National Taiwan University Hospital
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Study Director: Yu-Chih Hou, MD National Taiwan University Hospital
Study Director: Fung-Rong Hu, MD National Taiwan University Hospital
Principal Investigator: Yan-Ming Chen, MD National Taiwan University Hospital
National Taiwan University Hospital
September 2010

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP