Although persons infected with human immunodeficiency virus (HIV), particularly men who have sex with men, are at excess risk for anal cancer, it has been difficult to disentangle the influences of anal exposure to human papillomavirus (HPV) infection, immunodeficiency, and combined antiretroviral therapy. A case-control study that included 59 anal cancer cases and 295 individually matched cont...

background sexually transmitted infections (stis) have a major negative impact on sexual and reproductive health globally. the most effective way to avoid stis is to abstain from sexual contact or having sex only in a long-term, mutually monogamous relationship with an uninfected partner. objectives this study aimed to determine behavioral prevention regarding stis. patients and methods this an...

To determine HIV prevalence and associated risk factors among men who have sex with men (MSM) in Abidjan, Côte d'Ivoire. We conducted a cross-sectional RDS survey of MSM in Abidjan from October 2011 to February 2012. Eligibility criteria included age ≥ 18 years and having had oral or anal sex with another man in the last 12 months. Weighted data analysis was conducted with RDSAT and SAS. We enr...

INTRODUCTION Reducing high-risk behaviours (i.e. multiple partnership, condomless anal/vaginal sex, alcohol use before sex, illicit drug use) after HIV diagnosis is critical for curtailing HIV transmission. We designed an intervention to explore peer- counselling in reducing high-risk behaviours among newly diagnosed HIV-positive Chinese men who have sex with men (MSM). METHODS We randomized ...

CONTEXT Knowledge of sexual and contraceptive behaviors as risk factors for STDs is largely based on women's or men's separate reports of their attitudes and behaviors. Little research has been based on couples. METHODS Data from the 2005-2006 National Couples Survey were used to examine the sexual risk-taking behavior of 335 dating couples. Associations between each partner's characteristics...

We investigated the route of sexual exposure as a determinant for human papillomavirus (HPV)-16 and HPV-18 seropositivity. At the Amsterdam sexually transmitted infections clinic we recruited 4 risk groups: (1) men who have sex with women only (MSW; n = 751); (2) women who have sex with men (WSM; n = 749); (3) men who have sex with men (MSM) reporting insertive anal sex only (insMSM; n = 156); ...

1. A key component of parental care involves defending resources destined for offspring from a diverse array of potential interspecific competitors, such as social parasites, fungi and bacteria. 2. Just as with other aspects of parental care, such as offspring provisioning or brood defence, sexual conflict between parents may arise over how to share the costs of this form of care. There has bee...

The purpose of this study was to determine how initial HIV prevention efforts for homeless youth were received and to determine areas where homeless youth's beliefs and behaviors continue to put them at risk for HIV infection. Interviews were conducted with 289 Seattle homeless youth. Youth reported using condoms with casual partners during vaginal and anal sex and with clients during oral, ana...

BACKGROUND The prevalence of unprotected anal intercourse (UAI) is high among Chinese men who have sex with men (MSM). As important aspects of quality of life (QOL), psychological health and social relationships have been found to be associated with UAI among MSM, which was of great concern for intervening on UAI. METHODS We conducted a cross-sectional study in Zhengzhou, Henan province, and ...

Anal human papillomavirus (HPV) infection, which is linked to anal warts and anal cancer, is common among men who have sex with men (MSM), especially among those HIV positives. MSM aged 18 years or older were recruited from mainland China. Blood and anal cytologic samples were collected for HIV-1 serological test and HPV genotyping. A total of 889 eligible participations were included. The geno...