Chlamydia trachomatis genotypes and the Swedish new variant among urogenital Chlamydia trachomatis strains in Finland

Infect Dis Obstet Gynecol. 2011:2011:481890. doi: 10.1155/2011/481890. Epub 2011 May 18.


Our aims were to genotype Chlamydia trachomatis strains present in urogenital samples and to investigate the occurrence of the Swedish new variant of C. trachomatis in Finland. We genotyped 160 C. trachomatis positive samples with ompA real-time PCR and analyzed 495 samples for the new variant. The three most prevalent genotypes were E (40%), F (28%), and G (13%). Only two specimens containing bacteria with the variant plasmid were detected. It seems that in Finland the percentage of infections due to genotypes F and G has slightly increased during the last 20 years. Genotypes E and G appear to be more common, and genotypes J/Ja and I/Ia appear to be less common in Europe than in the USA. Although the genotype E was the most common genotype among C. trachomatis strains, the new variant was rarely found in Finland.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Outer Membrane Proteins / genetics
  • Chlamydia Infections / epidemiology
  • Chlamydia Infections / microbiology*
  • Chlamydia trachomatis / genetics*
  • Female
  • Finland / epidemiology
  • Genotype
  • Humans
  • Male
  • Polymerase Chain Reaction / methods
  • Sweden


  • Bacterial Outer Membrane Proteins
  • OMPA outer membrane proteins