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Chlamydia trachomatis infection and persistence of human papillomavirus.
Umeå University, Faculty of Medicine, Clinical Microbiology, Virology.
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2005 (English)In: International Journal of Cancer, ISSN 0020-7136, E-ISSN 1097-0215, Vol. 116, no 1, 110-5 p.Article in journal (Refereed) Published
Abstract [en]

Human papillomavirus (HPV) persistence is the major cause of cervical cancer, but most HPV infections will not persist and risk factors for HPV persistence are not well known. Chlamydia (C.) trachomatis infection seems to also be associated with cervical cancer. We investigated whether C. trachomatis infection is a risk factor for HPV persistence. In a cohort of 12,527 women participating in a population-based HPV screening trial in Sweden, 6,418 women completed testing for HPV DNA by general primer PCR and typing by reverse dot blot hybridization. On average 19 months later, 303 women that had been HPV-positive and had normal cytology at enrollment completed a new HPV test. Environmental exposures were assessed by an 87-item questionnaire. Previous sexually transmitted infections were also investigated by serology. At follow-up, 44% of the women were positive for the same type of HPV DNA as at enrollment. Persistence correlated with length of follow-up (p < 0.01) and condom use seemed to protect against HPV persistence (p < 0.05). The most significant risk factor for persistent presence of HPV DNA was self-reported history of previous C. trachomatis infection (relative risk in multivariate model = 2.09; 95% confidence interval = 1.05-4.18). We conclude that persistence of oncogenic HPV infections is more likely among women with a previous C. trachomatis infection.

Place, publisher, year, edition, pages
2005. Vol. 116, no 1, 110-5 p.
Identifiers
URN: urn:nbn:se:umu:diva-20668DOI: 10.1002/ijc.20970PubMedID: 15756673OAI: oai:DiVA.org:umu-20668DiVA: diva2:209275
Available from: 2009-03-24 Created: 2009-03-24 Last updated: 2017-12-13

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