Identification of the Swedish Chlamydia trachomatis variant among patients attending a STI clinic in Oslo, Norway

A Chlamydia trachomatis variant has been identified in patients in Sweden that harbours a 377 base pair deletion in the ORF1 in the C. trachomatis cryptic plasmid. There is no evidence for the presence of this new C. trachomatis variant outside Sweden, however, we wanted to assess whether this variant was circulating in Oslo, in order to implement new procedures for optimal specificity and sensitivity in detecting urogenital C. trachomatis infections.