Are Children Least Engaged with Health Care More Likely to Have Trachoma?

Area of Science:

• Ophthalmology
• Infectious Diseases
• Public Health

Background:

• Azithromycin distribution to children aged 0-9 is a key strategy for trachoma control.
• Trachoma remains a significant cause of preventable blindness globally.

Purpose of the Study:

• To investigate if the order of children's arrival for trachoma screening correlates with their infection status.
• To assess the impact of presentation timing on infection prevalence in a trachoma-endemic region.

Main Methods:

• Utilized baseline data from the Kebele Elimination of Trachoma for Ocular Health study in Ethiopia.
• Collected ocular Chlamydia trachomatis polymerase chain reaction test results from children aged 0-9 in 20 villages.
• Employed mixed-effects logistic regression to analyze the odds ratio of trachoma positivity based on presentation day.

Main Results:

• No statistically significant difference was found in trachoma prevalence between children screened on day 1 and those screened on subsequent days.
• The odds ratio for trachoma positivity on day 1 versus later was 0.89 (95% CI: 0.65-1.21, P=0.44).

Conclusions:

• The order of presentation for trachoma screening is not a significant factor influencing infection status in highly prevalent areas.
• This finding supports the established azithromycin distribution strategies without concern for screening order biases.