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  • Title: Chlamydia trachomatis seroprevalence atlas of Finland 1983-2003.
    Author: Lyytikäinen E, Kaasila M, Koskela P, Lehtinen M, Patama T, Pukkala E, Tasanen K, Surcel HM, Paavonen J.
    Journal: Sex Transm Infect; 2008 Feb; 84(1):19-22. PubMed ID: 17911135.
    Abstract:
    OBJECTIVES: To study Chlamydia trachomatis seroprevalence trends and geographical distribution over time in Finland. MATERIALS AND METHODS: First pregnancy serum samples were retrieved from the Finnish Maternity Cohort serum bank for the subcohort of 8000 women stratified by calendar years (1983-1989, 1990-1996, 1997-2003) and age at time of sample withdrawal (14-22 and 23-28 years). C trachomatis antibodies were determined using standard major outer membrane protein peptide ELISA. The spatiotemporal variation of C trachomatis seroprevalence rates was visualised by a series of maps. RESULTS: A decreasing C trachomatis seroprevalence trend from 1983 to 2003 was seen for both women under 23 years of age (20.8% to 10.6%) and 23-28-year-old women (19.1% to 12.5%). Constant clusters were seen around the largest cities and in eastern Finland although seroprevalence rates were generally decreasing throughout the country. CONCLUSIONS: Only a few population-based serological studies have been undertaken on C trachomatis epidemiology over time. In Finland the seroprevalence of C trachomatis is decreasing all over the country, albeit with small clusters remaining.
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