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Journal of Clinical Microbiology, June 2004, p. 2596-2601, Vol. 42, No. 6
0095-1137/04/$08.00+0     DOI: 10.1128/JCM.42.6.2596-2601.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Variability of the Chlamydia trachomatis omp1 Gene Detected in Samples from Men Tested in Male-Only Saunas in Melbourne, Australia

Nichole A Lister,1* Sepehr N. Tabrizi,2 Christopher K. Fairley,1 Anthony Smith,3 Peter H. Janssen,4 and Suzanne Garland2

Department of Public Health,1 Department of Microbiology and Immunology, The University of Melbourne,4 Department of Microbiology and Infectious Diseases, Royal Women's Hospital,2 Australian Research Centre in Sex, Health & Society, La Trobe University, Melbourne, Victoria, Australia3

Received 8 December 2003/ Returned for modification 18 February 2004/ Accepted 4 March 2004

A recent screening program in Melbourne, Victoria, Australia, has shown that Chlamydia trachomatis is an important infection among men who frequent male-only saunas. To evaluate the C. trachomatis isolates circulating in local saunas, the C. trachomatis-positive samples collected during the program underwent amplification and sequencing of the omp1 gene, and the corresponding serovars were deduced. Forty-seven C. trachomatis-positive samples collected (from October 2001 to September 2002) from 39 men were evaluated. The deduced serovars found, in descending order of prevalence, were D, G, and J; and serovars B, E, F, and H were each found in single samples. The seven different serovars identified in the study sample indicate that local saunas are a reservoir of multiple C. trachomatis strains, possibly maintained by the introduction of new patrons or regular patrons who have been exposed to C. trachomatis elsewhere. No significant genetic variants were found, as most variable positions were silent and were detected only in single samples.

* Corresponding author. Mailing address: Department of Public Health, Sexual Health Unit, Melbourne Sexual Health Centre, The University of Melbourne, 580 Swanston St., Carlton 3053, Victoria, Australia. Phone: 61 3 9344 2050. Fax: 61 3 9344 2713. E-mail: nicholel{at}pgrad.unimelb.edu.au.

Journal of Clinical Microbiology, June 2004, p. 2596-2601, Vol. 42, No. 6
0095-1137/04/$08.00+0     DOI: 10.1128/JCM.42.6.2596-2601.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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