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1.
Sex Transm Dis ; 49(1): e22-e25, 2022 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-33993164

RESUMEN

ABSTRACT: There are minimal data on the BVBlue test for diagnosis of bacterial vaginosis (BV) in Africa. Among 701 Kenyan women, compared with Nugent score ≥7, the BVBlue test had moderate sensitivity (81.9%; 95% confidence interval, 76.5%-86.5%) and high specificity (92.4%; 95% confidence interval, 89.5%-94.6%). This test may provide a complimentary approach to syndromic management.


Asunto(s)
Vaginosis Bacteriana , Estudios de Cohortes , Femenino , Humanos , Kenia/epidemiología , Sistemas de Atención de Punto , Sensibilidad y Especificidad , Vaginosis Bacteriana/diagnóstico , Vaginosis Bacteriana/epidemiología
2.
Sex Transm Dis ; 49(11): 782-785, 2022 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-35195617

RESUMEN

ABSTRACT: We compared human papillomavirus messenger RNA testing using urine, self-, and provider-collected samples for the detection of high-grade cervical cytology and assessed acceptability of urine self-collection among females who engage in sex work in Kenya. Participants found urine sampling comfortable, but high-risk human papillomavirus messenger RNA detection in urine samples was less likely to detect high-grade lesions than self- and provider-collected cervical samples.


Asunto(s)
Alphapapillomavirus , Infecciones por Papillomavirus , Displasia del Cuello del Útero , Neoplasias del Cuello Uterino , Alphapapillomavirus/genética , Detección Precoz del Cáncer , Femenino , Humanos , Kenia , Papillomaviridae/genética , Infecciones por Papillomavirus/diagnóstico , ARN Mensajero , Manejo de Especímenes , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/prevención & control , Frotis Vaginal
3.
Sex Transm Dis ; 49(9): e100-e103, 2022 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-34694274

RESUMEN

ABSTRACT: We compared detection of Chlamydia trachomatis , Neisseria gonorrhoeae , and Trichomonas vaginalis using dry and wet self-collected samples using brushes among females who engage in sex work in Mombasa, Kenya. Detection of T. vaginalis and N. gonorrhoeae in dry and wet samples was similar, but C. trachomatis detection in dry samples appeared lower.


Asunto(s)
Infecciones por Chlamydia , Gonorrea , Enfermedades de Transmisión Sexual , Trichomonas vaginalis , Infecciones por Chlamydia/diagnóstico , Infecciones por Chlamydia/epidemiología , Chlamydia trachomatis , Femenino , Gonorrea/diagnóstico , Humanos , Kenia/epidemiología , Neisseria gonorrhoeae , Prevalencia , Enfermedades de Transmisión Sexual/diagnóstico
4.
AIDS Behav ; 25(10): 3292-3302, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33861378

RESUMEN

No tool exists to stratify HIV risk in contemporary African female sex worker (FSW) populations. Data from a cohort of HIV-negative FSWs in Mombasa, Kenya from 2010 to 2017 were used to conduct a survival analysis assessing predictors of HIV infection. Stepwise regression was used to construct a multivariable model that formed the basis for the score. Seventeen HIV infections occurred over 1247 person-years of follow-up contributed by 670 women. Using depot medroxyprogesterone acetate (DMPA), having a curable sexually transmitted infection (STI), and being married contributed points to the score. HIV incidence was 0.85/100 person-years in a lower-risk group and 3.10/100 person-years in a higher-risk group. In a cohort with overall HIV incidence < 1.50/100 person-years, this risk score identified a subgroup of FSWs with HIV incidence > 3.00/100 person-years, which is the threshold used by the World Health Organization for initiating pre-exposure prophylaxis (PrEP). If validated in an external population, this tool could be useful for targeted PrEP promotion among higher-risk FSWs.


Asunto(s)
Infecciones por VIH , Profilaxis Pre-Exposición , Trabajadores Sexuales , Femenino , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Humanos , Incidencia , Kenia/epidemiología , Factores de Riesgo , Trabajo Sexual
5.
AIDS Behav ; 25(10): 3047-3056, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33880670

RESUMEN

The relationships between depressive symptoms, viral suppression, and condomless sex were examined in a prospective cohort study of 369 HIV-positive Kenyan female sex workers. Participants were screened for depressive symptoms at baseline and every six months until completion of the study (up to 66 months). HIV viral load (VL) was measured every six months and prostate specific antigen (PSA) testing in vaginal secretions was performed quarterly. Mild or greater depressive symptoms were found in 100 (27.1%) women and were associated with increased risk of detectable VL (aRR 1.41, 95%CI 0.97-2.07, p-value = 0.07), but were not associated with detectable PSA. The co-occurrence of PSA detection and detectable VL at the same visit suggests the potential for HIV transmission but was uncommon (2.4% of visits). The prevalence of depressive symptoms and the association with detectable VL suggests the need for screening and treatment of depression for comprehensive HIV care in this population.


Asunto(s)
Infecciones por VIH , Trabajadores Sexuales , Depresión/epidemiología , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Humanos , Kenia/epidemiología , Masculino , Estudios Prospectivos , Sexo Inseguro , Carga Viral
6.
Sex Transm Infect ; 95(6): 455-461, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-30696752

RESUMEN

OBJECTIVES: Vaginal washing has been associated with reductions in cultivable Lactobacillus and an increased risk of both bacterial vaginosis (BV) and HIV infection. The effect of vaginal washing on the quantity of individual Lactobacillus species is not well characterised. This analysis tested the hypothesis that vaginal washing would be associated with a lower likelihood of Lactobacillus spp. detected by both culture and quantitative PCR (qPCR). METHODS: We conducted a cross-sectional study of 272 HIV-seronegative women enrolled in an open-cohort study in Mombasa, Kenya. Vaginal washing and sexual risk behaviours were assessed using face-to-face interviews. Vaginal Lactobacillus spp. were detected using cultivation and PCR methods, with L. crispatus, L. jensenii and L. iners concentrations measured using qPCR assays targeting the 16S rRNA gene. Poisson regression with robust SEs was used to assess associations between vaginal washing and Lactobacillus detection by culture and qPCR. RESULTS: Eighty percent (n=217) of participants reported vaginal washing in the prior week. One-fifth (n=58) of participants had BV by Nugent score. In unadjusted analysis, vaginal washing was associated with a 45% decreased likelihood of Lactobacillus spp. detection by culture (prevalence ratio (PR): 0.55, 95% CI 0.37 to 0.82). Adjusting for age and condomless sex in the prior week did not change the magnitude of the association (adjusted PR (aPR): 0.56, 95% CI (0.37 to 0.85). Vaginal washing was associated with approximately a 40% reduction in L. crispatus detection (aPR: 0.57, 95% CI 0.36 to 0.92), but was not significantly associated with L. jensenii (aPR: 0.68, 95% CI 0.42 to 1.09) or L. iners detection (aPR: 1.03, 95% CI 0.92 to 1.15). CONCLUSIONS: Vaginal washing in the prior week was associated with a significantly reduced likelihood of detecting cultivable Lactobacillus and L. crispatus by qPCR. Given associations between Lactobacillus detection and improved reproductive health outcomes, these results provide motivation for additional study of vaginal washing cessation interventions to improve vaginal health.


Asunto(s)
Lactobacillus/aislamiento & purificación , Vagina/microbiología , Adolescente , Adulto , Estudios de Cohortes , Estudios Transversales , ADN Bacteriano/genética , Femenino , Humanos , Kenia , Lactobacillus/clasificación , Lactobacillus/genética , Lactobacillus/crecimiento & desarrollo , ARN Ribosómico 16S/genética , Reacción en Cadena en Tiempo Real de la Polimerasa , Conducta Sexual , Adulto Joven
7.
Sex Transm Dis ; 46(1): 31-36, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30148757

RESUMEN

Some studies suggest that higher body mass index is associated with increased susceptibility to bacterial vaginosis (BV), but results are conflicting. METHODS: Female sex workers aged 16 to 45 years and participating in an open, prospective cohort study in Mombasa, Kenya between 2000 and 2014 were included in this analysis. Up to 2 years of follow-up were included per woman. Body mass index (BMI) was categorized as underweight (≤18.5), normal (18.5-24.9), overweight (25-29.9), and obese (≥30). Bacterial vaginosis was assessed using Nugent scores. Generalized estimating equations were used to estimate relative risks of the association between BMI and BV. RESULTS: At baseline, 32.1% (n = 625) of 1946 women had BV. Half of women were overweight (31.1%, n = 606) or obese (20.1%, n = 391). Participants contributed 14,319 follow-up visits. Adjusting for age, compared to women with normal BMI, overweight (adjusted relative risk, 0.91; 95% confidence interval, 0.81-1.02) and obese (adjusted relative risk, 0.82; 95% confidence interval, 0.71-0.94) women were at lower risk for BV (joint P = 0.03). CONCLUSIONS: Obese women had a nearly 20% lower risk of BV compared with women with normal BMI. Potential mechanisms for this effect, including possible effects of diet, obesity-associated changes in the gut microbiome, and systemic estrogen levels, should be explored.


Asunto(s)
Índice de Masa Corporal , Vagina/microbiología , Vaginosis Bacteriana/epidemiología , Adolescente , Adulto , Femenino , Humanos , Incidencia , Kenia , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Trabajadores Sexuales/estadística & datos numéricos , Adulto Joven
8.
Sex Transm Dis ; 45(8): 514-521, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29465649

RESUMEN

BACKGROUND: Little is known about the natural history of Mycoplasma genitalium (MG) infection in women. We retrospectively tested archived vaginal fluid samples to assess MG prevalence, incidence, persistence, recurrence and antimicrobial resistance markers among women participating in the Preventing Vaginal Infections trial, a randomized trial of monthly presumptive treatment to reduce vaginal infections. METHODS: High-risk, nonpregnant, HIV-negative women aged 18 to 45 years from Kenya and the United States were randomized to receive metronidazole 750 mg + miconazole 200 mg intravaginal suppositories or placebo for 5 consecutive nights each month for 12 months. Clinician-collected swabs containing cervicovaginal fluid were tested for MG using Hologic nucleic acid amplification testing at enrollment and every other month thereafter. Specimens that were MG+ underwent additional testing for macrolide resistance-mediating mutations by DNA sequencing. RESULTS: Of 234 women enrolled, 221 had available specimens and 25 (11.3%) had MG at enrollment. Among 196 women without MG at enrollment, there were 52 incident MG infections (incidence, 33.4 per 100 person-years). Smoking was independently associated with incident MG infection (adjusted hazard ratio, 3.02; 95% confidence interval, 1.32-6.93), and age less than 25 years trended toward an association (adjusted hazard ratio, 1.70; 95% confidence interval, 0.95-3.06). Median time to clearance of incident MG infections was 1.5 months (interquartile range, 1.4-3.0 months). Of the 120 MG+ specimens, 16 specimens from 15 different women were macrolide resistance-mediating mutation positive (13.3%), with no difference by country. CONCLUSIONS: M. genitalium infection is common among sexually active women in Kenya and the Southern United States. Given associations between MG and adverse reproductive health outcomes, this high burden of MG in reproductive-aged women could contribute to substantial morbidity.


Asunto(s)
Antibacterianos/farmacología , Macrólidos/farmacología , Metronidazol/farmacología , Miconazol/farmacología , Infecciones por Mycoplasma/epidemiología , Mycoplasma genitalium/aislamiento & purificación , Administración Intravaginal , Adolescente , Adulto , Farmacorresistencia Bacteriana , Femenino , Humanos , Incidencia , Kenia/epidemiología , Persona de Mediana Edad , Infecciones por Mycoplasma/microbiología , Mycoplasma genitalium/genética , Prevalencia , Estudios Retrospectivos , Conducta Sexual , Estados Unidos/epidemiología , Vagina/microbiología , Adulto Joven
9.
J Infect Dis ; 213(12): 1932-7, 2016 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-26908758

RESUMEN

BACKGROUND: Bacterial vaginosis (BV) may increase women's susceptibility to sexually transmitted infections (STIs). In a randomized trial of periodic presumptive treatment (PPT) to reduce vaginal infections, we observed a significant reduction in BV. We further assessed the intervention effect on incident Chlamydia trachomatis, Neisseria gonorrhoeae, and Mycoplasma genitalium infection. METHODS: Nonpregnant, human immunodeficiency virus-uninfected women from the United States and Kenya received intravaginal metronidazole (750 mg) plus miconazole (200 mg) or placebo for 5 consecutive nights each month for 12 months. Genital fluid specimens were collected every other month. Poisson regression models were used to assess the intervention effect on STI acquisition. RESULTS: Of 234 women enrolled, 221 had specimens available for analysis. Incidence of any bacterial STI (C. trachomatis, N. gonorrhoeae, or M. genitalium infection) was lower in the intervention arm, compared with the placebo arm (incidence rate ratio [IRR], 0.54; 95% confidence interval [CI], .32-.91). When assessed individually, reductions in STI incidences were similar but not statistically significant (IRRs, 0.50 [95% confidence interval {CI}, .20-1.23] for C. trachomatis infection, 0.56 [95% CI, .19-1.67] for N. gonorrhoeae infection, and 0.66 [95% CI, .38-1.15] for M. genitalium infection). CONCLUSIONS: In addition to reducing BV, this PPT intervention may also reduce the risk of bacterial STI among women. Because BV is highly prevalent, often persists, and frequently recurs after treatment, interventions that reduce BV over extended periods could play a role in decreasing STI incidence globally.


Asunto(s)
Antiinfecciosos/administración & dosificación , Infecciones por Chlamydia/prevención & control , Gonorrea/prevención & control , Infecciones por Mycoplasma/prevención & control , Enfermedades de Transmisión Sexual/prevención & control , Vaginosis Bacteriana/prevención & control , Adulto , Infecciones por Chlamydia/epidemiología , Infecciones por Chlamydia/microbiología , Chlamydia trachomatis/efectos de los fármacos , Quimioterapia Combinada , Femenino , Gonorrea/epidemiología , Gonorrea/microbiología , Humanos , Incidencia , Kenia/epidemiología , Metronidazol/administración & dosificación , Miconazol/administración & dosificación , Infecciones por Mycoplasma/epidemiología , Infecciones por Mycoplasma/microbiología , Mycoplasma genitalium/efectos de los fármacos , Neisseria gonorrhoeae/efectos de los fármacos , Profilaxis Pre-Exposición , Enfermedades de Transmisión Sexual/epidemiología , Enfermedades de Transmisión Sexual/microbiología , Resultado del Tratamiento , Estados Unidos/epidemiología , Vaginosis Bacteriana/epidemiología , Vaginosis Bacteriana/microbiología , Adulto Joven
10.
AIDS Behav ; 20(9): 2054-64, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-27094785

RESUMEN

We conducted a prospective cohort study to test the hypothesis that intimate partner violence (IPV) is associated with unprotected sex in HIV-positive female sex workers in Mombasa, Kenya. Women completed monthly visits and quarterly examinations. Any IPV in the past year was defined as ≥1 act of physical, sexual, or emotional violence by the current or most recent emotional partner ('index partner'). Unprotected sex with any partner was measured by self-report and prostate specific antigen (PSA) test. Recent IPV was associated with significantly higher risk of unprotected sex (adjusted relative risk [aRR] 1.91, 95 % CI 1.32, 2.78, p = 0.001) and PSA (aRR 1.54, 95 % CI 1.17, 2.04, p = 0.002) after adjusting for age, alcohol use, and sexual violence by someone besides the index partner. Addressing IPV in comprehensive HIV programs for HIV-positive women in this key population is important to improve wellbeing and reduce risk of sexual transmission of HIV.


Asunto(s)
Seropositividad para VIH/epidemiología , Seropositividad para VIH/psicología , Violencia de Pareja , Trabajadores Sexuales/psicología , Sexo Inseguro/estadística & datos numéricos , Adulto , Consumo de Bebidas Alcohólicas , Femenino , Humanos , Violencia de Pareja/estadística & datos numéricos , Kenia/epidemiología , Estudios Longitudinales , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Delitos Sexuales/psicología , Delitos Sexuales/estadística & datos numéricos , Conducta Sexual , Parejas Sexuales/psicología
11.
J Infect Dis ; 209(7): 1023-7, 2014 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-24273042

RESUMEN

Herpes simplex virus type 2 (HSV-2) infected women have a higher prevalence of bacterial vaginosis (BV) compared to HSV-2-seronegative women. To explore the temporal association between these conditions, we evaluated the frequency of BV episodes before and after HSV-2 acquisition in a prospective study of 406 HSV-2/HIV-1-seronegative Kenyan women, of whom 164 acquired HSV-2. Incident HSV-2 was associated with increased likelihood of BV (adjusted OR, 1.28; 95% CI, 1.05-1.56; P = .01). Our findings strengthen the evidence for a causal link between genital HSV-2 infection and disruption of the vaginal microbiota.


Asunto(s)
Herpes Genital/complicaciones , Herpesvirus Humano 2/aislamiento & purificación , Vaginosis Bacteriana/epidemiología , Adolescente , Adulto , Estudios de Cohortes , Femenino , Herpes Genital/virología , Humanos , Kenia/epidemiología , Persona de Mediana Edad , Prevalencia , Estudios Prospectivos , Medición de Riesgo , Adulto Joven
12.
Sex Transm Infect ; 90(2): 94-9, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24327758

RESUMEN

OBJECTIVES: The WHO recommends that men who have sex with men (MSM) reporting unprotected receptive anal intercourse (RAI) and either multiple partners or a partner with a sexually transmitted infection (STI) in the past 6 months should be presumptively treated for asymptomatic rectal Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) infections. We evaluated this recommendation in a cohort of 'high-risk' MSM in Coastal Kenya. METHODS: We assessed presence of genitourinary and rectal symptoms, and determined prevalence and 3-month incidence of rectal NG and CT infections. We performed nucleic acid amplification testing of urine and rectal swab samples collected from MSM followed prospectively, and assessed predictive values of the WHO algorithm at baseline screening. RESULTS: Of 244 MSM screened, 240 (98.4%) were asymptomatic, and 147 (61.3%) reported any RAI in the past 6 months. Among 85 (35.4%) asymptomatic MSM meeting criteria for the WHO presumptive treatment (PT) recommendation, we identified 20 with rectal infections (six NG, 12 CT and two NG-CT co-infections). Among 62 asymptomatic MSM who did not meet criteria, we identified seven who were infected. The sensitivity and specificity of the WHO algorithm were 74.1% (95% CI 53.7% to 88.9%) and 45.8% (95% CI 36.7% to 55.2%), respectively. The 3-month incidence of any rectal NG or CT infection in asymptomatic men reporting any RAI was 39.7 (95% CI 24.3 to 64.8) per 100 person-years. CONCLUSIONS: About one-third of asymptomatic MSM were eligible to receive PT for NG and CT infections. Among MSM who would qualify for PT of rectal STIs, the number needed to treat in order to treat one infection was four. Our results support the value of the WHO screening algorithm and recommended PT strategy in this population.


Asunto(s)
Antibacterianos/uso terapéutico , Infecciones por Chlamydia/diagnóstico , Infecciones por Chlamydia/tratamiento farmacológico , Gonorrea/diagnóstico , Gonorrea/tratamiento farmacológico , Homosexualidad Masculina/estadística & datos numéricos , Tamizaje Masivo , Enfermedades del Recto/microbiología , Adulto , Algoritmos , Infecciones por Chlamydia/prevención & control , Chlamydia trachomatis/aislamiento & purificación , Gonorrea/prevención & control , Humanos , Kenia/epidemiología , Masculino , Tamizaje Masivo/métodos , Neisseria gonorrhoeae/aislamiento & purificación , Técnicas de Amplificación de Ácido Nucleico , Aceptación de la Atención de Salud , Guías de Práctica Clínica como Asunto , Prevalencia , Enfermedades del Recto/tratamiento farmacológico , Enfermedades del Recto/prevención & control , Recto/microbiología , Sensibilidad y Especificidad , Parejas Sexuales , Organización Mundial de la Salud
13.
AIDS Behav ; 18(7): 1324-9, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24179037

RESUMEN

Few prospective studies have evaluated the association between alcohol use and STI acquisition among African women. We examined the association between baseline drinking frequency and STIs in a cohort of Kenyan women reporting transactional sex. The association between alcohol use and STI differed significantly by HIV status. Among 139 HIV-positive women, STI acquisition was significantly associated with consuming 1-7 drinks/week and marginally associated with ≥8 drinks/week in unadjusted analyses. However, no association between alcohol use and STIs was observed among 335 HIV-negative women. Addressing alcohol use within comprehensive HIV care may also reduce the burden of STIs among high-risk women.


Asunto(s)
Consumo de Bebidas Alcohólicas/epidemiología , Trabajo Sexual , Trabajadores Sexuales/estadística & datos numéricos , Conducta Sexual , Enfermedades de Transmisión Sexual/epidemiología , Adolescente , Adulto , Consumo de Bebidas Alcohólicas/efectos adversos , Femenino , Humanos , Kenia/epidemiología , Estudios Longitudinales , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Asunción de Riesgos , Trabajadores Sexuales/psicología , Enfermedades de Transmisión Sexual/prevención & control
14.
Sex Transm Infect ; 89(3): 217-22, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23002190

RESUMEN

BACKGROUND: Intravaginal practices including vaginal washing have been associated with HIV-1 acquisition. This association may be mediated by mucosal disruption, changes in vaginal flora or genital tract inflammatory responses. Reducing vaginal washing could lower women's risk of HIV-1 acquisition. METHODS: 23 HIV-1 seronegative women who reported current vaginal washing were recruited from a prospective cohort study of high-risk women in Mombasa, Kenya. A theoretical framework including information-motivation-behavioural skills and harm reduction was implemented to encourage participants to reduce or eliminate vaginal washing. At baseline and after 1 month, we evaluated vaginal epithelial lesions by colposcopy, vaginal microbiota by Nugent's criteria and vaginal cytokine milieu using ELISA on cervicovaginal lavage specimens. RESULTS: The most commonly reported vaginal washing substance was soap with water (N=14, 60.9%). The median frequency of vaginal washing was 7 (IQR 7-14) times per week. After 1 month, all participants reported cessation of vaginal washing (p=0.01). The probability of detecting cervicovaginal epithelial lesions was lower (OR 0.48; 95% CI 0.20 to 1.16; p=0.10) and the likelihood of detecting Lactobacillus by culture was higher (OR 3.71, 95% CI 0.73 to 18.76, p=0.11) compared with baseline, although these results were not statistically significant. There was no change in the prevalence of bacterial vaginosis. Most cytokine levels were reduced, but these changes were not statistically significant. CONCLUSIONS: A theory-based intervention appeared to have a positive effect in reducing vaginal washing over 1 month. Larger studies with longer follow-up are important to further characterise the effects of vaginal washing cessation on biological markers.


Asunto(s)
Terapia Conductista/métodos , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Trabajadores Sexuales , Ducha Vaginal/efectos adversos , Adolescente , Adulto , Líquidos Corporales/química , Citocinas/análisis , Femenino , Humanos , Kenia , Lactobacillus/aislamiento & purificación , Metagenoma , Persona de Mediana Edad , Membrana Mucosa/fisiología , Proyectos Piloto , Resultado del Tratamiento , Vagina/inmunología , Vagina/microbiología , Vagina/fisiología , Adulto Joven
15.
Sex Transm Dis ; 40(6): 499-505, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23677023

RESUMEN

BACKGROUND: This analysis compared the frequency of persistent Trichomonas vaginalis (TV) among HIV-seropositive and HIV-seronegative women. METHODS: Data were obtained from women enrolled in an open cohort study of sex workers in Kenya. Participants were examined monthly, and those diagnosed as having TV by saline microscopy were treated with single-dose 2 g oral metronidazole. All women on antiretroviral therapy (ART) used nevirapine-based regimens. Generalized estimating equations with a logit link were used to compare the frequency of persistent TV (defined as the presence of motile trichomonads by saline microscopy at the next examination visit within 60 days) by HIV status. RESULTS: Three-hundred sixty participants contributed 570 infections to the analysis (282 HIV-seropositive and 288 HIV-seronegative). There were 42 (15%) persistent infections among HIV-seropositive participants versus 35 (12%) among HIV-seronegative participants (adjusted odds ratio, 1.14; 95% confidence interval [CI], 0.70-1.87). Persistent TV was highest among HIV-seropositive women using ART (21/64 [33%]) compared with HIV-seropositive women not using ART (21/217 [10%]). Concurrent bacterial vaginosis (BV) at TV diagnosis was associated with an increased likelihood of persistent TV (adjusted odds ratio, 1.90; 95% confidence interval, 1.16-3.09). CONCLUSIONS: The frequency of persistent TV infection after treatment with single-dose 2 g oral metronidazole was similar by HIV status. Alternative regimens including multiday antibiotic treatment may be necessary to improve cure rates for women using nevirapine-based ART and women with TV and concurrent BV.


Asunto(s)
Antiprotozoarios/administración & dosificación , Infecciones por VIH/complicaciones , Seropositividad para VIH/complicaciones , Metronidazol/administración & dosificación , Vaginitis por Trichomonas/tratamiento farmacológico , Trichomonas vaginalis/efectos de los fármacos , Adulto , Fármacos Anti-VIH/uso terapéutico , Antiprotozoarios/uso terapéutico , Estudios de Cohortes , Quimioterapia Combinada , Femenino , Infecciones por VIH/tratamiento farmacológico , Humanos , Metronidazol/uso terapéutico , Nevirapina/uso terapéutico , Estudios Prospectivos , Inhibidores de la Transcriptasa Inversa/uso terapéutico , Resultado del Tratamiento , Vaginitis por Trichomonas/complicaciones , Vaginitis por Trichomonas/parasitología , Trichomonas vaginalis/aislamiento & purificación
16.
Sex Transm Dis ; 39(5): 332-4, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22504591

RESUMEN

We have recently reported high levels of fluoroquinolone resistance in a single region of Kenya. In this article, we report high prevalence of fluoroquinolone resistance (53.2%) in Neisseria gonorrhoeae isolates from 4 clinics in 3 additional regions of Kenya. These findings highlight the need to change first-line treatment in these settings and the need to evaluate empirical management guidelines for treatment of gonococcal infection in Kenya.


Asunto(s)
Farmacorresistencia Bacteriana , Fluoroquinolonas/administración & dosificación , Gonorrea/tratamiento farmacológico , Neisseria gonorrhoeae/aislamiento & purificación , Adulto , Femenino , Fluoroquinolonas/farmacología , Gonorrea/prevención & control , Gonorrea/transmisión , Humanos , Kenia/epidemiología , Masculino , Tamizaje Masivo , Pruebas de Sensibilidad Microbiana , Neisseria gonorrhoeae/efectos de los fármacos , Prevalencia , Vigilancia de Guardia
17.
Sex Transm Infect ; 86(6): 440-1, 2010 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-20656722

RESUMEN

OBJECTIVES: To assess the burden of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) in high-risk HIV-1 negative men who have sex with men (MSM) in Africa. METHODS: Before the start of a pre-exposure prophylaxis trial, HIV-1 negative volunteers were screened for sexually transmitted infection (STI) including CT and NG, using a highly sensitive and specific nucleic acid amplification test. Samples positive for CT by Aptima testing, were evaluated for the presence of lymphogranuloma venereum (LGV) serovars using an in-house PCR assay. All men were asked to submit a urine specimen, and all had a rectal swab collected by a clinician. Men were asked if they had dysuria, urethral or rectal discharge, or rectal pain. RESULTS: 43 HIV-1 negative MSM were screened, of whom 13 reported sex with men only; the majority (27/43) reported sex work. One volunteer had dysuria and another, rectal pain. Eleven MSM (26%, 95% CI 14% to 41%) had infections with either or both pathogens. Homosexual men had a higher prevalence of any infection than bisexual men (46% vs 17%, p=0.04), and all cases of rectal infections, including one with CT, two with NG and two with CT/NG co-infection. All patients with CT were negative for LGV. One patient with a rectal NG infection reported rectal pain. CONCLUSIONS: A remarkably high burden of STI infection was found among HIV-1 negative MSM. Most (12/13) infections, including three of four rectal NG infections, were subclinical. These findings suggest that high-risk MSM will benefit from effective STI screening in Kenya.


Asunto(s)
Infecciones por Chlamydia/epidemiología , Gonorrea/epidemiología , Seronegatividad para VIH , VIH-1 , Homosexualidad Masculina/estadística & datos numéricos , Adulto , Chlamydia trachomatis , Humanos , Kenia/epidemiología , Masculino , Neisseria gonorrhoeae , Prevalencia , Enfermedades del Recto/epidemiología , Enfermedades Uretrales/epidemiología , Adulto Joven
18.
PLoS One ; 15(11): e0242817, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33232378

RESUMEN

BACKGROUND: Excessive alcohol intake has been associated with poor adherence to antiretroviral therapy (ART). The impact of alcohol on viral suppression is particularly important among groups at high risk of HIV transmission, such as female sex workers (FSWs). Few studies have directly evaluated the association between alcohol use and HIV viral load. We hypothesized that hazardous or harmful alcohol use is associated with detectable plasma viral load among HIV-positive FSWs. METHODS: A prospective cohort study was conducted among HIV-positive FSWs in Mombasa, Kenya. Hazardous or harmful alcohol use was assessed yearly and defined as an Alcohol Use Disorders Identification Test (AUDIT) score ≥7. Detectable viral load was assessed every six months and defined as ≥180 c/mL. Adherence measures were collected monthly and included late ART refill (>48 hours) and self-reported adherence, using both a validated self-rating scale of ability to take medication and visual analog scale (VAS) of ART use in the last month. Generalized estimating equations were used to estimate adjusted relative risks (aRR) and 95% confidence intervals (CI). RESULTS: This analysis included 366 participants followed monthly between October 2012 and March 2018. At baseline, AUDIT scores indicated hazardous alcohol use (AUDIT 7-15) in 14.3%, harmful alcohol use (AUDIT 16-19) in 1.4%, and alcohol dependency (AUDIT ≥20) in 1.4% of participants. After adjusting for potential confounders, a combined exposure including hazardous, harmful, and dependent alcohol use was not associated with detectable viral load (aRR 1.10, 95%CI 0.63-1.92) or late ART refill (aRR 1.13, 95%CI 0.82-1.56), but was associated with lower self-rated ability to take medication (aRR 2.38, 95%CI 1.42-3.99) and a lower rate of self-reported perfect ART adherence by VAS (aRR 2.62, 95%CI 1.84-3.71). CONCLUSIONS: In this FSW cohort, while participants reporting hazardous, harmful, or dependent alcohol use were not more likely to have a detectable viral load, they were more likely to report lower ART adherence. These results suggest that interventions targeting alcohol use among this population of FSWs may not have a large impact on viral suppression.


Asunto(s)
Consumo de Bebidas Alcohólicas/efectos adversos , Alcoholismo/epidemiología , Infecciones por VIH/epidemiología , Trabajadores Sexuales , Adulto , Alcoholismo/complicaciones , Alcoholismo/virología , Fármacos Anti-VIH/uso terapéutico , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Humanos , Kenia/epidemiología , Cumplimiento de la Medicación , Conducta Sexual/efectos de los fármacos , Carga Viral/efectos de los fármacos
19.
J Acquir Immune Defic Syndr ; 78(3): 276-282, 2018 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-29543635

RESUMEN

BACKGROUND: Little is known about fertility desire in HIV-positive female sex workers. Fertility desire could increase HIV transmission risk if it was associated with condomless sex or lower adherence to antiretroviral therapy. METHODS: A prospective cohort study was conducted among 255 HIV-positive female sex workers in Mombasa, Kenya. Using generalized estimating equations, fertility desire was evaluated as a risk factor for semen detection in vaginal secretions by prostate-specific antigen (PSA) test, a biomarker of condomless sex, detectable plasma viral load (VL), and HIV transmission potential, defined as visits with positive PSA and detectable VL. RESULTS: The effect of fertility desire on PSA detection varied significantly by nonbarrier contraception use (P-interaction < 0.01). At visits when women reported not using nonbarrier contraception, fertility desire was associated with higher risk of semen detection [82/385, 21.3% vs. 158/1007, 15.7%; adjusted relative risk (aRR) 1.58, 95% confidence interval (CI): 1.12 to 2.23]. However, when women used nonbarrier contraception, fertility desire was associated with lower risk of PSA detection (10/77, 13.0% vs. 121/536, 22.6%; aRR 0.58, 95% CI: 0.35 to 0.94). Fertility desire was not associated with detectable VL (31/219, 14.2% vs. 128/776, 16.5%; aRR 0.82, 95% CI: 0.46 to 1.45) or higher absolute risk of transmission potential (10/218, 4.6% vs. 21/769, 2.7%; adjusted risk difference = 0.011, 95% CI -0.031 to 0.050). CONCLUSIONS: Fertility desire was associated with higher risk of biological evidence of semen exposure when women were not using nonbarrier contraceptives. Low HIV transmission potential regardless of fertility desire suggests that the combination of condoms and antiretroviral therapy adherence was effective.


Asunto(s)
Fertilidad , Infecciones por VIH/virología , Trabajadores Sexuales , Sexo Inseguro , Carga Viral , Biomarcadores , Femenino , Humanos , Kenia , Límite de Detección , Masculino , Estudios Prospectivos , Semen/virología
20.
J Womens Health (Larchmt) ; 27(9): 1152-1161, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29630431

RESUMEN

BACKGROUND: Female sex workers (FSWs) are at high risk for gender-based violence (GBV) and HIV infection. This study aimed to identify associations between GBV exposure in the past 12 months and biomarkers of physiologic stress and inflammation that may play a role in increased HIV risk among Kenyan FSWs. MATERIALS AND METHODS: Participating women responded to a detailed questionnaire on GBV and mental health. Plasma was collected for assessment of systemic C-reactive protein (CRP) and interleukin-6 (IL-6) levels. Hair proximal to the scalp was collected to measure cortisol concentration. CRP and IL-6 were measured by enzyme-linked immunosorbent assay, and hair cortisol concentration was determined by enzyme immunoassay. Log-transformed biomarker values were compared across GBV exposure categories using Kruskal-Wallis or Wilcoxon rank sum tests. Multivariable linear regression was used to explore associations between recent GBV and hair cortisol concentration. RESULTS: Two hundred eighty-three women enrolled, of whom 112 (39.6%) reported physical, sexual, or emotional violence in the past 12 months, 134 (47.3%) reported more remote exposure, and 37 (13.1%) reported no exposure. CRP and IL-6 levels did not differ across groups (p = 0.57 and p = 0.62, respectively). Among 141 women who provided hair, cortisol concentrations were higher among recently exposed women compared to the other two groups combined (p = 0.02). In multivariable regression, recently exposed women had higher hair cortisol levels than remotely exposed or unexposed women (adjusted beta = 0.52, 95% confidence interval 0.02-1.02, p = 0.04). CONCLUSIONS: While CRP and IL-6 levels did not differ by GBV category, recent GBV was associated with increased hair cortisol concentration. GBV-related increases in cortisol could affect health outcomes and merit study in relation to HIV acquisition risk.


Asunto(s)
Proteína C-Reactiva/metabolismo , Violencia de Género , Cabello/química , Hidrocortisona/análisis , Inflamación/sangre , Trabajadores Sexuales/estadística & datos numéricos , Estrés Fisiológico , Adulto , Biomarcadores/análisis , Proteína C-Reactiva/análisis , Estudios Transversales , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Interleucina-6/sangre , Kenia , Trabajadores Sexuales/psicología
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