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HPV in older women may be due to reactivation of virus, not new infection
Date:12/12/2012

[EMBARGOED FOR DEC. 13, 2012] A new study suggests that human papillomavirus (HPV) infection in women at or after menopause may represent an infection acquired years ago, and that HPV infections may exist below limits of detection after one to two years, similar to other viruses, such as varicella zoster, which can cause shingles. The study, published in The Journal of Infectious Diseases and available online, highlights the need for additional research to better understand HPV infections and the role of HPV persistence and reactivation, particularly in women of the baby boomer generation.

In previous studies, HPV has been detected in 25 to 50 percent of young, sexually active women. In most of these cases, after two years the virus is "cleared," or is no longer detected in samples. Studies have shown that HPV infection peaks in young women around the age of sexual debut and begins to decline in the late 20s and 30s. In some countries, such as in Central and South America, HPV has been shown to have a second peak around the age of menopause. In contrast, in previous studies in the United States and Europe, HPV prevalence remains low or continues to decline with age.

Researchers, led by Patti E. Gravitt, PhD, of Johns Hopkins Bloomberg School of Public Health and Perdana University Graduate School of Medicine in Serdang, Malaysia, set out to investigate what factors influence these differences. They compared differences in recent and lifetime sexual behaviors by age groups to investigate the presence of a cohort effect in a population of women in Baltimore.

The study included approximately 850 women aged 35-60 who were receiving routine cervical cancer screening from 2008 to 2011. While HPV prevalence was higher among women who reported a new sexual partner within 6 months prior to study enrollment, less than 3 percent of women in the study reported having a new partner in that time. Conversely, nearly 90 percent of HPV infecti
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Contact: Jerica Pitts
jpitts@pcipr.com
312-558-1770
Infectious Diseases Society of America
Source:Eurekalert

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