Population-based human papillomavirus 16, 18, 6 and 11 DNA positivity and seropositivity in Chinese women.

To optimize HPV vaccination implementation at the population-level in China, data are needed on age-specific HPV 16, 18, 6 and 11 prevalence. This cross-sectional, population-based study evaluated the age- and type-specific HPV 16, 18, 6 and 11 prevalence of DNA and serum antibodies among women in China. From July 2006 to April 2007, 17-54 year old women from three rural provinces (Xinjiang, Shanxi and Henan) and two cities (Beijing and Shanghai) provided cervical exfoliated cells for HPV DNA and liquid-based cervical cytology (SurePath).

Sexual risk taking behaviour: prevalence and associated factors. A population-based study of 22,000 Danish men.

Background: Sexual habits and risky sexual behaviour strongly affect public health. Available data indicate that sexually transmitted infections are increasing in many EU countries. Changes in the epidemiology of sexually transmitted diseases across Europe are among other factors suggested to be driven by changes in sexual behaviour patterns.

Awareness of human papillomavirus in a cohort of nearly 70,000 women from four Nordic countries.

Objective: To assess the fraction of women who have heard of human papillomavirus (HPV) in four Nordic countries (Denmark, Iceland, Norway, and Sweden) and to study the correlates of this awareness, just before the vaccines were released.

Design: Population-based cross-sectional study by means of a questionnaire. Setting.