International Journal of STD & AIDS > Volume 19, Number 7 > Pp. 455-458

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Original research articles

The prevalence of chlamydial infection in Estonia: a population-based survey

A Uusküla MD PhD ^* , M Kals MS ^*, K Denks MS , ÜK Nurm MD , L Kasesalu ^*, J DeHovitz MD MPH  and L A McNutt PhD ^**

^* Department of Public Health, University of Tartu; Quattromed HTI Laboratories Ltd, Tartu; Public Health Department, Ministry of Social Affairs, Tallinn, Estonia; Department of Preventive Medicine and Community Health, State University of New York Downstate Medical Center, Brooklyn; ^** Department of Epidemiology, School of Public Health, State University of New York, Albany, NY, USA

Correspondence to: Professor Anneli Uusküla, Department of Public Health, University of Tartu, Ravila 19, Tartu 50411, Estonia Email: anneli.uuskula{at}ut.ee

The aim of this study was to estimate the prevalence of Chlamydia trachomatis infection among Estonian men and women by a cross-sectional study based on the screening of a probability sample of the residents of Tartu using participant-collected, mail-delivered testing for C. trachomatis complemented with the self-administered questionnaire. Full participation as defined by returning both the questionnaire and specimen was 34% (n = 479; 95% confidence interval [CI] 32–37%). Study participation was 40% (n = 560; 95% CI 37–43%) for subjects returning either or both the study questionnaire and specimen. After weighing the population distribution, the prevalence estimate for the age group of 18–35 years was 5.4% (95% CI 3.0–7.5%), 6.9% (95% CI 3.6–10.3%) among women and 2.7% (95% CI 0.3–5.0%) among men. The number of sexual partners in the past 12 months was the strongest predictor of infection.

Key Words: Chlamydia trachomatis • chlamydia • prevalence • screening • Estonia

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