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Chlamydia trachomatis Seroprevalence Atlas of Finland 1983-2003
  1. Erika Lyytikäinen
  1. NPHI and Dep of Dermatology, Univ of Oulu, Finland
    1. Marjo Kaasila
    1. NPHI, Oulu, Finland
      1. Pentti Koskela
      1. NPHI, Oulu, Finland
        1. Matti Lehtinen
        1. NPHI, Oulu, Finland
          1. Timo Patama
          1. NPHI, Kuopio, Finland
            1. Eero Pukkala
            1. School of Public Health, Univ of Tampere, Finland
              1. Kaisa Tasanen
              1. Dep of Dermatology, Univ of Oulu, Finland
                1. Heljä-Marja Surcel (helja-marja.surcel{at}
                1. NPHI,Oulu, Finland
                  1. Jorma Paavonen
                  1. Dep of Obstetrics and Gynecology, Finland


                    Objectives: To study Chlamydia trachomatis seroprevalence trends and geographical distribution over time in Finland.

                    Material and Methods: First pregnancy serum samples were retrieved from Finnish Maternity Cohort serum bank for the subcohort of 8.000 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 MOMP peptide ELISA. The spatio-temporal variation of C. trachomatis seroprevalence rates was visualized by a series of maps.

                    Results: A decreasing C. trachomatis seroprevalence trend from 1983 to 2003 was seen for both among under 23 years of age (20.8% to 10.6%) and among 23-28-year-old women (19.1% to 12.5%). Constant clusters were seen around the largest cities and in eastern Finland although the seroprevalence rates were generally decreasing throughout the country.

                    Conclusions: Only a few population-based serologic studies have been undertaken about C. trachomatis epidemiology over time. In Finland the seroprevalence of C. trachomatis is decreasing all over the country, albeit with small clusters remaining.

                    • Chlamydial antibody
                    • EIA
                    • atlas
                    • pregnancy
                    • sexually transmitted diseases

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