Validity of self-reported 'safe sex' among female sex workers in Mombasa, Kenya--PSA analysis

We assessed the validity of self-reported sex and condom use by comparing self-reports with prostate-specific antigen (PSA) detection in a prospective study of 210 female sex workers in Mombasa, Kenya. Participants were interviewed on recent sexual behaviours at baseline and 12-month follow-up visits. At both visits, a trained nurse instructed participants to self-swab to collect vaginal fluid specimens, which were tested for PSA using enzyme-linked immunosorbent assay (ELISA). Eleven percent of samples (n = 329) from women reporting no unprotected sex for the prior 48 hours tested positive for PSA. The proportions of women with this type of discordant self-reported and biological data did not differ between the enrolment and 12-month visit (odds ratio [OR] 1.1; 95% confidence interval [CI] 0.99, 1.2). The study found evidence that participants failed to report recent unprotected sex. Furthermore, because PSA begins to clear immediately after exposure, our measures of misreported semen exposure likely are underestimations.     

Association of HIV infection with distribution and viral load of HPV types in Kenya: a survey with 820 female sex workers

Background  

Human papillomavirus (HPV) and HIV are each responsible for a considerable burden of disease. Interactions between these infections pose substantial public health challenges, especially where HIV prevalence is high and HPV vaccine coverage low.     

Heavy episodic drinking among Kenyan female sex workers is associated with unsafe sex, sexual violence and sexually transmitted infections

This study examined patterns of alcohol use and its association with unsafe sex and related sequelae among female sex workers in Mombasa, Kenya. A community-based cross-sectional study was conducted using snowball sampling. Binge drinkers (> or =5 alcoholic drinks on > or =1 occasion in the previous month) were compared with non-binge drinkers. Of 719 participants, 22.4% were lifetime-alcohol abstainers, 44.7% non-binge and 33.0% binge drinkers. Compared with non-binge drinkers, binge drinkers were more likely to report unprotected sex (adjusted odds ratio (AOR)=1.59, 95% confidence interval [CI]=1.00-2.53; P=0.047) and sexual violence (AOR=1.85, 95% CI=1.27-2.71; P=0.001) and to have either syphilis, Neisseria gonorrhoeae or Trichomonas vaginalis infection (AOR=1.56, 95% CI=1.00-2.41; P=0.048). HIV prevalence was higher among women having ever drunk (39.9%) than lifetime abstainers (23.2%; P<0.001), but was not associated with drinking patterns. Interventions are needed to assist female sex workers adopt safer drinking patterns. Investigation is needed for the effectiveness of such interventions in reducing unprotected sex, sexual violence and sexually transmitted infections.     

'Are you on the market?': a capture-recapture enumeration of men who sell sex to men in and around Mombasa, Kenya

BACKGROUND: Men who have sex with men (MSM) are highly vulnerable to HIV infection, but this population can be particularly difficult to reach in sub-Saharan Africa. We aimed to estimate the number of MSM who sell sex in and around Mombasa, Kenya, in order to plan HIV prevention research. METHODS: We identified 77 potential MSM contact locations, including public streets and parks, brothels, bars and nightclubs, in and around Mombasa and trained 37 MSM peer leader enumerators to extend a recruitment leaflet to MSM who were identified as 'on the market', that is, a man who admitted to selling sex to men. We captured men on two consecutive Saturdays, 1 week apart. A record was kept of when, where and by whom the invitation was extended and received, and of refusals. The total estimate of MSM who sell sex was derived from capture-recapture calculation. RESULTS: Capture 1 included 284 men (following removal of 15 duplicates); 89 men refused to participate. Capture 2 included 484 men (following removal of 35 duplicates); 75 men refused to participate. Of the 484 men in capture 2, 186 were recaptures from capture 1, resulting in a total estimate of 739 (95% confidence interval, 690-798) MSM who sell sex in the study area. CONCLUSIONS: We estimated that 739 MSM sell sex in and around Mombasa. Of these, 484 were contacted through trained peer enumerators in a single day. MSM who sell sex in and around Mombasa represent a sizeable population who urgently need to be targeted by HIV prevention strategies.     

Factors associated with self-reported unprotected anal sex among male sex workers in Mombasa, Kenya

OBJECTIVES:: To identify social and behavioral characteristics associated with sexual risk behaviors among male sex workers who sell sex to men in Mombasa, Kenya. METHODS:: Using time-location sampling, 425 men who had recently sold, and were currently willing to sell sex to men were invited to participate in a cross-sectional survey. A structured questionnaire was administered using handheld computers. Factors associated with self-reported unprotected anal sex with male clients in the past 30 days were identified and subjected to multivariate analysis. RESULTS:: Thirty-five percent of respondents did not know HIV can be transmitted via anal sex, which was a significant predictor of unprotected anal sex [adjusted odds ratio (AOR) 1.92; 95% confidence interval (95% CI), 1.16-3.16]. Other associated factors included drinking alcohol 3 or more days per week (AOR, 1.63; 95% CI, 1.05-2.54), self-report of burning urination within the past 12 months (AOR, 2.07; 95% CI, 1.14-3.76), and having never been counseled or tested for HIV (AOR, 1.66; 95% CI, 1.07-2.57). Only 21.2% of respondents correctly knew that a water-based lubricant should be used with latex condoms. CONCLUSIONS:: Male sex workers who sell sex to men in Mombasa are in acute need of targeted prevention information on anal HIV and STI transmission, consistent condom use, and correct lubrication use with latex condoms. HIV programs in Africa need to consider and develop specific prevention strategies to reach this vulnerable population.     

Acceptability of the diaphragm in Mombasa Kenya: a 6-month prospective study.

OBJECTIVES: If proven acceptable, safe and effective, the diaphragm could be used as a female-controlled method of preventing both sexually-transmitted infections (STIs) and pregnancy. This study's aim was to assess the acceptability and safety of the diaphragm among sexually-active women in Mombasa, Kenya. METHODS: We conducted a 6-month prospective study among female sex workers (FSWs), and women attending sexual and reproductive health services. Diaphragm acceptability was assessed using continuation rates and factors associated with acceptability. Safety evaluations included colposcopy findings and incidence of urinary tract infections (UTIs) and STIs. RESULTS: Half the 185 participants were FSWs who had less schooling and were less likely to be married than other women. After 6 months, 55% (56/102) of sexually-active women reported having used the diaphragm each sex act during the preceding month. Women liked using the diaphragm (95%, 104/109), and 96% (125/130) reported willingness to continue using it. Colposcopy did not reveal significantly more vaginal or cervical lesions. Use of the diaphragm was not associated with an increase in bacterial vaginosis or UTIs. A pregnancy rate of 12 per 100 women/years was observed. CONCLUSION: After 6 months of diaphragm use in this setting, continuation rates were sustained, user satisfaction was high and adverse effects were few.     

Reproductive health services for populations at high risk of HIV: Performance of a night clinic in Tete province, Mozambique

Background  

Different models exist to provide HIV/STI services for most-at-risk populations (MARP). Along the Tete traffic corridor in Mozambique, linking Malawi and Zimbabwe, a night clinic opening between 4 and 10 PM was established targeting female sex workers (FSW) and long-distance truck drivers (LDD). The clinic offers free individual education and counselling, condoms, STI care, HIV testing, contraceptive services and outreach peer education. To evaluate this clinic model, we assessed relevance, service utilisation, efficiency and sustainability.