Abstract
Background: This study investigated HIV infection risk in men who have sex with men (MSM) and female sex workers (FSWs) by analysing signs of anal and vaginal epithelial trauma. It reconsidered the unique role of sexual abstinence for HIV seroconversion from a previous case-control analysis on FSWs in Nairobi who acquired HIV after previously fulfilling criteria of HIV resistance. The approach was based on a similarly unique role of intercourse frequency for anal dyspareunia. We considered confounding behavioural and individual HIV infection risks among the sex workers, who also assessed factors influencing discomfort and pain during sex from a subjective perspective. Methods: At two key population facilities in Nairobi, 322 FSWs and 231 MSM provided data on HIV infection status, sexual dysfunction, intercourse frequency and abstinence behaviour. Additional data addressed sexual debut, relationship status, lubricants, foreplay, the number of sex partners, condom use, group and anonymous sex, vaginal births, intravaginal practices, sex toys, other sexually transmitted infections, alcohol and drug use. Statistical tests included t-tests for the equality of means for abstinence gaps and intercourse frequencies, the number of sex partners, vaginal births, and age of sexual debut. Non-parametric tests were used to compare HIV status and the ordinal variables of sexual behaviour, individual factors, dyspareunia and signs of trauma scores. Subjective assessments of variables for sexual dysfunction were given as percentages of the assessment options. Results: Among FSWs, significant associations were found between HIV status and the longest abstinence gap for vaginal intercourse in the previous month, early sexual debut, foreplay, having anonymous partners, intravaginal practices, drugs and alcohol use, and all the sexual dysfunction or epithelial disruption signs. No significant association between HIV status and sexual dysfunction variables or sexual abstinence gaps could be found in the MSM sample. FSWs agreed that steady partnerships, regularity of intercourse, foreplay and lubrication or artificial lubricants alleviate discomfort and painful intercourse. Conclusions: Dyspareunia and epithelial trauma signs were highly prevalent in FSWs and MSM, indicating considerable limitations to sexual health. Complaint levels were positively associated with HIV infection, suggesting that reducing epithelial disruption may be a novel HIV prevention approach.
Depression and Sexual Dysfunction Among HIV-Positive and HIV-Negative Men Who Have Sex With Men: Mediation by Use of Antidepressants and Recreational Stimulants
