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Journal of Clinical Microbiology, August 2005, p. 3743-3746, Vol. 43, No. 8
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.8.3743-3746.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Molecular Subtyping of Treponema pallidum from North and South Carolina

Victoria Pope,1* Kimberley Fox,1,2,{dagger} Hsi Liu,1 Anthony A. Marfin,1,{ddagger} Peter Leone,2,3 Arlene C. Seña,3 Johanna Chapin,1 Martha B. Fears,1 and Lauri Markowitz1

Division of STD Prevention, National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia,1 Department of Health and Human Services, North Carolina,2 University of North Carolina, Chapel Hill, North Carolina3

Received 7 January 2005/ Returned for modification 12 February 2005/ Accepted 7 April 2005

Patients from five clinics in North and South Carolina who had lesions suggestive of primary or secondary syphilis were evaluated using molecular techniques that allow the differentiation of Treponema pallidum strains on the basis of two variable genes, tpr and arp. Lesion samples were screened for the presence of T. pallidum DNA using PCR for polA, which represents a segment of the polymerase I gene that is unique to the spirochete. Twenty-seven of 154 lesion samples were found to contain T. pallidum, 23 of which had typeable DNA. Seven molecular subtypes were found (10f, 12f, 13f, 14f, 14g, 15f, and 16f); one to four subtypes were identified at each clinic. Subtype 14f was found in 52% of the typeable specimens and was distributed in four of the five clinics. Subtype 16f was found in 22% of specimens and was concentrated at one clinic. Further data are needed to define the role of this technique in examining the epidemiology of syphilis.

* Corresponding author. Mailing address: Mail Stop A-12, OD/NCHSTP/CDC, 1600 Clifton Rd., NE, Atlanta, GA 30333. Phone: (404) 639-4583. Fax: (404) 639-3446. E-mail: vpope{at}cdc.gov.

{dagger} Current address: Global AIDS Program, National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention, Bangkok, Thailand.

{ddagger} Current address: San Francisco Quarantine Station, Division of Global Migration and Quarantine, Centers for Disease Control and Prevention, San Francisco, California.

Journal of Clinical Microbiology, August 2005, p. 3743-3746, Vol. 43, No. 8
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.8.3743-3746.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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