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1.
Clin Infect Dis ; 78(6): 1591-1600, 2024 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-38114162

RESUMEN

BACKGROUND: A substantial proportion of persons on antiretroviral therapy (ART) considered lost to follow-up have actually transferred their human immunodeficiency virus (HIV) care to other facilities. However, the relationship between facility switching and virologic outcomes, including viral rebound, is poorly understood. METHODS: We used data from 40 communities (2015-2020) in the Rakai Community Cohort Study to estimate incidence of facility switching and viral rebound. Persons aged 15-49 years with serologically confirmed HIV who self-reported ART use and contributed ≥1 follow-up visit were included. Facility switching and virologic outcomes were assessed between 2 consecutive study visits (ie, index and follow-up visits, interval of approximately 18 months). Those who reported different HIV treatment facilities between index and follow-up study visits were classified as having switched facilities. Virologic outcomes included viral rebound among individuals initially suppressed (<200 copies/mL). Multivariable Poisson regression was used to estimate associations between facility switching and viral rebound. RESULTS: Overall, 2257 persons who self-reported ART use (median age, 35 years; 65% female, 92% initially suppressed) contributed 3335 visit-pairs and 5959 person-years to the analysis. Facility switching was common (4.8 per 100 person-years; 95% confidence interval [CI], 4.2-5.5) and most pronounced in persons aged <30 years and fishing community residents. Among persons suppressed at their index visit (n = 2076), incidence of viral rebound was more than twice as high in persons who switched facilities (adjusted incidence rate ratio = 2.27; 95% CI, 1.16-4.45). CONCLUSIONS: Facility switching was common and associated with viral rebound among persons initially suppressed. Investments in more agile, person-centered models for mobile clients are needed to address system inefficiencies and bottlenecks that can disrupt HIV care continuity.


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Carga Viral , Humanos , Adulto , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Infecciones por VIH/virología , Uganda/epidemiología , Femenino , Masculino , Persona de Mediana Edad , Adolescente , Adulto Joven , Incidencia , Fármacos Anti-VIH/uso terapéutico , Instituciones de Salud/estadística & datos numéricos , Estudios de Cohortes
2.
Sex Transm Infect ; 2024 Jul 04.
Artículo en Inglés | MEDLINE | ID: mdl-38964842

RESUMEN

OBJECTIVE: Voluntary medical male circumcision (MC) is a critical tool in combination HIV prevention programmes in Africa. Self-reported MC (SrMC) status is used in HIV epidemiological surveys to assess MC coverage but is subject to response bias with limited validation. This study evaluated the utility of SrMC status as a marker of MC as well as self-reported genital lesions for genital ulcer disease (GUD) among Ugandan men. METHODS: Male participants aged 18-49 years in the cross-sectional Sexually Transmitted Infection Prevalence study, conducted between May and October 2019, responded to a questionnaire capturing SrMC status and current genital ulcer symptoms followed by clinical assessment to verify MC and presence of GUD.Sensitivity, specificity, positive predictive value, negative predictive value and corresponding CIs (95% CI) for SrMC status and GUD were estimated. RESULTS: There were 853 male participants, of whom 470 (55.1%) self-reported being circumcised and 23 (2.7%) self-reported GUD (SrGUD). MC was clinically confirmed in 50.2% (n=428) of participants with sensitivity of SrMC status at 99% (95% CI: 98% to 100%) and specificity 89% (95% CI: 86% to 92%). Specificity of SrMC was lowest among persons living with HIV and viremic (>1000 copies/mL) at 72% (95% CI: 46% to 90%). 18 participants had clinically confirmed GUD, but only 12 SrGUD symptoms, corresponding to a sensitivity and specificity of 67% (95% CI: 41% to 87%) and 99% (95% CI: 98% to 99%), respectively. CONCLUSIONS: SrMC status is a robust proxy for clinically confirmed MC status and may reliably be used to assess MC coverage in this setting. Conversely, GUD symptoms were under-reported, which may impact effective syndromic management of sexually transmitted infections and warrants further examination.

3.
Reprod Health ; 21(1): 65, 2024 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-38760855

RESUMEN

BACKGROUND: Low use of modern methods of contraception has been linked to HIV seropositivity and to migration, but few studies have evaluated the intersection of both risk factors with contraceptive use. METHODS: We analyzed cross-sectional data from sexually active female participants aged 15 to 49 years in the Rakai Community Cohort Study (RCCS) between 2011 and 2013. The RCCS is an open population-based census and individual survey in south-central Uganda. Recent in-migrants (arrival within approximately 1.5 years) into RCCS communities were identified at time of household census. The primary outcome was unsatisfied demand for a modern contraceptive method (injectable, oral pill, implant, or condom), which was defined as non-use of a modern contraceptive method among female participants who did not want to become pregnant in the next 12 months. Poisson regression models with robust variance estimators were used to identify associations and interactions between recent migration and HIV serostatus on unsatisfied contraceptive demand. RESULTS: There were 3,417 sexually active participants with no intention of becoming pregnant in the next year. The mean age was 30 (± 8) years, and 17.3% (n = 591) were living with HIV. Overall, 43.9% (n = 1,500) were not using any modern contraceptive method. Recent in-migrants were somewhat more likely to have unsatisfied contraceptive demand as compared to long-term residents (adjusted prevalence risk ratio [adjPRR] = 1.14; 95% confidence interval [95%CI]: 1.02-1.27), whereas participants living with HIV were less likely to have unsatisfied contraceptive demand relative to HIV-seronegative participants (adjPRR = 0.80; 95%CI = 0.70-0.90). When stratifying on migration and HIV serostatus, we observed the highest levels of unsatisfied contraceptive demand among in-migrants living with HIV (48.7%); however, in regression analyses, interaction terms between migration and HIV serostatus were not statistically significant. CONCLUSIONS: Unsatisfied contraceptive demand was high in this rural Ugandan setting. Being an in-migrant, particularly among those living with HIV, was associated with higher unsatisfied contraceptive demand.


Through a cross-sectional study, we explored the relationship between HIV status, migration, and contraceptive use among sexually active women of reproductive age in rural south-central Uganda. People who had moved into the study area within the last 1.5 years were considered in-migrants, compared to long-term residents i.e. people who had not moved. We examined unsatisfied demand for a modern contraceptive method, which is to say female participants who did not want to become pregnant in the next 12 months and were not using at least one of the following contraceptive methods: injectable, oral pill, implant, or condom. We included 3,417 sexually active female participants with no intention of becoming pregnant in the next year. The average age of these women was 30 years, less than 20% were living with HIV, and almost half were not using any modern contraceptive methods. Recent in-migrants were somewhat more likely to have unsatisfied contraceptive demand as compared to long-term residents, whereas participants living with HIV were less likely to have unsatisfied contraceptive demand relative to HIV-negative participants. Being an in-migrant, particularly among those living with HIV, was associated with higher unsatisfied contraceptive demand. This study shows the need for integrating contraceptive and HIV services for mobile populations in East Africa.


Asunto(s)
Conducta Anticonceptiva , Infecciones por VIH , Humanos , Femenino , Adulto , Uganda/epidemiología , Estudios Transversales , Conducta Anticonceptiva/estadística & datos numéricos , Adolescente , Adulto Joven , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Persona de Mediana Edad , Anticoncepción/estadística & datos numéricos , Anticoncepción/métodos , Migrantes/estadística & datos numéricos , Conducta Sexual
4.
J Infect Dis ; 228(9): 1198-1207, 2023 11 02.
Artículo en Inglés | MEDLINE | ID: mdl-37079374

RESUMEN

BACKGROUND: Herpes simplex virus type 2 (HSV-2) is an incurable sexually transmitted infection associated with increased risk of acquiring and transmitting human immunodeficiency virus (HIV). HSV-2 is highly prevalent in sub-Saharan Africa, but population-level estimates of incidence are sparse. METHODS: We measured HSV-2 prevalence from cross-sectional serological data among adults aged 18-49 years in 2 south-central Uganda communities (fishing, inland). We identified risk factors for seropositivity, then inferred age patterns of HSV-2 with a Bayesian catalytic model. RESULTS: HSV-2 prevalence was 53.6% (n = 975/1819; 95% confidence interval, 51.3%-55.9%). Prevalence increased with age, was higher in the fishing community, and among women, reaching 93.6% (95% credible interval, 90.2%-96.6%) by age 49 years. Factors associated with HSV-2 seropositivity included more lifetime sexual partners, HIV positive status, and lower education. HSV-2 incidence peakied at age 18 years for women and 19-20 years for men. HIV prevalence was up to 10-fold higher in HSV-2-positive individuals. CONCLUSIONS: HSV-2 prevalence and incidence were extremely high, with most infections occurring in late adolescence. Interventions against HSV-2, such as future vaccines or therapeutics, must target young populations. Remarkably higher HIV prevalence among HSV-2-positive individuals underscores this population as a priority for HIV prevention.


Asunto(s)
Infecciones por VIH , Seropositividad para VIH , Herpes Genital , Adulto , Masculino , Adolescente , Humanos , Femenino , Persona de Mediana Edad , Herpesvirus Humano 2 , Uganda/epidemiología , Estudios Seroepidemiológicos , Prevalencia , Incidencia , Estudios Transversales , Teorema de Bayes , Factores de Riesgo , Seropositividad para VIH/complicaciones , Infecciones por VIH/epidemiología , Infecciones por VIH/complicaciones , Conducta Sexual
5.
J Pediatr ; 257: 113271, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36402433

RESUMEN

OBJECTIVES: To assess the cognitive capacity of early, middle, and late adolescents and their parents or guardians to provide informed consent to a population-based cohort study. STUDY DESIGN: Adolescent-parent/guardian dyads including 40 early (n = 80; 10-14 years), 20 middle (15-17 years), and 20 late (18-19 years) adolescents were recruited from the Rakai Community Cohort Study, an open demographic cohort in Uganda. Participants were administered the MacArthur Competence Assessment Tool for Clinical Research, a structured open-ended assessment; interviews were recorded and transcribed. Twenty transcripts were scored independently by two coders; the intraclass correlation coefficient was 0.89. The remaining interviews were scored individually. We compared mean scores for early and middle/late adolescents using a one-sided t test and score differences between parent/guardian and adolescent dyads using two-sided paired t tests. RESULTS: Early adolescents (mean score, 28.8; 95% CI, 27.1-30.5) scored significantly lower (P < .01) than middle/late adolescents (32.4; 31.6-33.1). In paired dyad comparisons, we observed no statistically significant difference in scores between parents/guardians and middle/late adolescents (difference, -0.2; 95% CI, -1.0-0.6). We found a statistically significant difference in scores between parents/guardians and early adolescents (difference, 3.0; 95% CI, 1.2-4.8). CONCLUSIONS: The capacity of adolescents-of different ages and in diverse settings-to comprehend risks, benefits, and other elements of informed consent is a critical but understudied area in research ethics. Our findings support the practice of having middle and late adolescents provide independent informed consent for sexual and reproductive health studies. Early adolescents may benefit from supported decision-making approaches.


Asunto(s)
Consentimiento Informado , Competencia Mental , Humanos , Adolescente , Competencia Mental/psicología , Estudios de Cohortes , Uganda , Consentimiento Informado/psicología , Padres , Toma de Decisiones
6.
AIDS Care ; 35(9): 1291-1298, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37170392

RESUMEN

Intimate partner violence (IPV) has been associated with delays throughout the HIV care continuum. This study explored prospective associations between experiences of past-year IPV and two HIV care outcomes in the context of current universal test and treat guidelines using two consecutive rounds of an ongoing HIV surveillance study conducted in the Rakai region of Uganda. Longitudinal logistic regression models examined associations between IPV, use of antiretroviral therapy (ART) and viral load suppression (VS), adjusting for outcome variables at baseline. To address differences in ART retention by IPV, propensity scores were used to create inverse-probability-of-treatment-and-censoring-weighted (IPTCW) models. At baseline, of 1923 women with HIV (WWH), 34.6%, 26.5%, 13.5% reported past-year verbal, physical and sexual IPV; a lower proportion of persons who experienced physical IPV (79.4%) were VS than those who did not (84.3%; p = 0.01). The proportion VS at baseline also significantly differed by exposure to verbal IPV (p = 0.03). However, in adjusted longitudinal models, IPV was not associated with lower odds of ART use or VS at follow-up. Among WWH in the Rakai region, IPV does not appear to be a barrier to subsequent ART use or VS. However, given the prevalence of IPV in this population, interventions are needed.


Asunto(s)
Infecciones por VIH , Violencia de Pareja , Humanos , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Uganda/epidemiología , Conducta Sexual , Prevalencia , Parejas Sexuales , Factores de Riesgo
7.
Emerg Infect Dis ; 28(13): S105-S113, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36502402

RESUMEN

The COVID-19 pandemic spread between neighboring countries through land, water, and air travel. Since May 2020, ministries of health for the Democratic Republic of the Congo, Tanzania, and Uganda have sought to clarify population movement patterns to improve their disease surveillance and pandemic response efforts. Ministry of Health-led teams completed focus group discussions with participatory mapping using country-adapted Population Connectivity Across Borders toolkits. They analyzed the qualitative and spatial data to prioritize locations for enhanced COVID-19 surveillance, community outreach, and cross-border collaboration. Each country employed varying toolkit strategies, but all countries applied the results to adapt their national and binational communicable disease response strategies during the pandemic, although the Democratic Republic of the Congo used only the raw data rather than generating datasets and digitized products. This 3-country comparison highlights how governments create preparedness and response strategies adapted to their unique sociocultural and cross-border dynamics to strengthen global health security.


Asunto(s)
Viaje en Avión , COVID-19 , Enfermedades Transmisibles , Humanos , Brotes de Enfermedades , COVID-19/epidemiología , Pandemias/prevención & control , Enfermedades Transmisibles/epidemiología , República Democrática del Congo/epidemiología
8.
BMC Infect Dis ; 22(1): 174, 2022 Feb 21.
Artículo en Inglés | MEDLINE | ID: mdl-35189840

RESUMEN

BACKGROUND: Globally, key subpopulations such as healthcare workers (HCW) may have a higher risk of contracting SARS-CoV-2. In Uganda, limited access to Personal Protective Equipment and lack of clarity on the extent/pattern of community spread may exacerbate this situation. The country established infection prevention/control measures such as lockdowns and proper hand hygiene. However, due to resource limitations and fatigue, compliance is low, posing continued onward transmission risk. This study aimed to describe extent of SARS-CoV-2 seroprevalence in selected populations within the Rakai region of Uganda. METHODS: From 30th November 2020 to 8th January 2021, we collected venous blood from 753 HCW at twenty-six health facilities in South-Central Uganda and from 227 population-cohort participants who reported specific COVID-19 like symptoms (fever, cough, loss of taste and appetite) in a prior phone-based survey conducted (between May and August 2020) during the first national lockdown. 636 plasma specimens collected from individuals considered high risk for SARS-CoV-2 infection, prior to the first confirmed COVID-19 case in Uganda were also retrieved. Specimens were tested for antibodies to SARS-CoV-2 using the CoronaChek™ rapid COVID-19 IgM/IgG lateral flow test assay. IgM only positive samples were confirmed using a chemiluminescent microparticle immunoassay (CMIA) (Architect AdviseDx SARS-CoV-2 IgM) which targets the spike protein. SARS-CoV-2 exposure was defined as either confirmed IgM, both IgM and IgG or sole IgG positivity. Overall seroprevalence in each participant group was estimated, adjusting for test performance. RESULTS: The seroprevalence of antibodies to SARS-CoV-2 in HCW was 26.7% [95%CI: 23.5, 29.8] with no difference by sex, age, or cadre. We observed no association between PPE use and seropositivity among exposed healthcare workers. Of the phone-based survey participants, 15.6% [95%CI: 10.9, 20.3] had antibodies to SARS-CoV-2, with no difference by HIV status, sex, age, or occupation. Among 636 plasma specimens collected prior to the first confirmed COVID-19 case, 2.3% [95%CI: 1.2, 3.5] were reactive. CONCLUSIONS: Findings suggest high seroprevalence of antibodies to SARS-CoV-2 among HCW and substantial exposure in persons presenting with specific COVID-19 like symptoms in the general population of South-Central Uganda. Based on current limitations in serological test confirmation, it remains unclear whether seroprevalence among plasma specimens collected prior to confirmation of the first COVID-19 case implies prior SARS-CoV-2 exposure in Uganda.


Asunto(s)
COVID-19 , SARS-CoV-2 , Anticuerpos Antivirales , Control de Enfermedades Transmisibles , Personal de Salud , Humanos , Estudios Seroepidemiológicos , Uganda/epidemiología
9.
BMC Public Health ; 22(1): 2214, 2022 11 29.
Artículo en Inglés | MEDLINE | ID: mdl-36447173

RESUMEN

BACKGROUND: Non-communicable diseases such as cardiovascular conditions and diabetes are rising in sub-Saharan Africa. Prevention strategies to mitigate non-communicable diseases include improving diet, physical activity, early diagnosis, and long-term management. Early identification of individuals at risk based on risk-score models - such as the Framingham Risk Score (FRS) for 10-year risk of cardiovascular disease and the Finnish type 2 Diabetes risk score (FINDRISC) for type 2 diabetes which are used in high-income settings - have not been well assessed in sub-Saharan Africa. The purpose of this study was to qualitatively assess local knowledge of components of these risk scores in a rural Ugandan setting. METHODS: Semi-structured qualitative in-depth interviews were conducted with a purposively selected sample of 15 participants who had responded to the FRS and FINDRISC questionnaires and procedures embedded in the Rakai Community Cohort Study. Data were summarized and categorized using content analysis, with support of Atlas.ti. RESULTS: Participants described local terms for hypertension ("pulessa") and type 2 diabetes ("sukaali"). Most participants understood physical activity as leisure physical activity, but when probed would also include physical activity linked to routine farm work. Vegetables were typically described as "plants", "leafy greens", and "side dish". Vegetable and fruit consumption was described as varying seasonally, with peak availability in December after the rainy season. Participants perceived themselves to have good knowledge about their family members' history of type 2 diabetes and hypertension. CONCLUSIONS: While most items of the FRS and FINDRISC were generally well understood, physical activity needs further clarification. It is important to consider the seasonality of fruits and vegetables, especially in rural resource-poor settings. Current risk scores will need to be locally adapted to estimate the 10-year risk of cardiovascular diseases and type 2 diabetes in this setting.


Asunto(s)
Enfermedades Cardiovasculares , Diabetes Mellitus Tipo 2 , Hipertensión , Enfermedades no Transmisibles , Humanos , Diabetes Mellitus Tipo 2/epidemiología , Diabetes Mellitus Tipo 2/prevención & control , Uganda/epidemiología , Estudios de Cohortes , Finlandia , Dieta , Ejercicio Físico , Verduras , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/prevención & control , Factores de Riesgo
10.
J Infect Dis ; 223(7): 1150-1160, 2021 04 08.
Artículo en Inglés | MEDLINE | ID: mdl-33471100

RESUMEN

BACKGROUND: There are limited data on individual human immunodeficiency virus (HIV) viral load (VL) trajectories at the population-level after the introduction of universal test and treat (UTT) in sub-Saharan Africa. METHODS: Human immunodeficiency virus VLs were assessed among HIV-positive participants through 3 population-based surveys in 4 Ugandan fishing communities surveyed between November 2011 and August 2017. The unit of analysis was a visit-pair (2 consecutive person-visits), which were categorized as exhibiting durable VL suppression, new/renewed VL suppression, viral rebound, or persistent viremia. Adjusted relative risks (adjRRs) and 95% confidence intervals (CIs) of persistent viremia were estimated using multivariate Poisson regression. RESULTS: There were 1346 HIV-positive participants (n = 1883 visit-pairs). The population-level prevalence of durable VL suppression increased from 29.7% to 67.9% during UTT rollout, viral rebound declined from 4.4% to 2.7%, and persistent viremia declined from 20.8% to 13.3%. Younger age (15-29 vs 40-49 years; adjRR = 1.80; 95% CI = 1.19-2.71), male sex (adjRR = 2.09, 95% CI = 1.47-2.95), never being married (vs currently married; adjRR = 1.88, 95% CI = 1.34-2.62), and recent migration to the community (vs long-term resident; adjRR = 1.91, 95% CI = 1.34-2.73) were factors associated with persistent viremia. CONCLUSIONS: Despite increases in durable VL suppression during roll out of UTT in hyperendemic communities, a substantial fraction of the population, whose risk profile tended to be younger, male, and mobile, remained persistently viremic.


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Seropositividad para VIH , Viremia , Adolescente , Adulto , Fármacos Anti-VIH/uso terapéutico , Femenino , VIH , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Seropositividad para VIH/tratamiento farmacológico , Humanos , Masculino , Persona de Mediana Edad , Infección Persistente , Prevalencia , Uganda/epidemiología , Carga Viral , Viremia/epidemiología , Adulto Joven
11.
Clin Infect Dis ; 73(7): e1946-e1953, 2021 10 05.
Artículo en Inglés | MEDLINE | ID: mdl-33043978

RESUMEN

BACKGROUND: The efficacy of voluntary male medical circumcision (VMMC) for human immunodeficiency virus (HIV) prevention in men was demonstrated in 3 randomized trials. This led to the adoption of VMMC as an integral component of the United States President's Emergency Plan for AIDS Relief (PEPFAR) combination HIV prevention program in sub-Saharan Africa. However, evidence on the individual-level effectiveness of VMMC programs in real-world, programmatic settings is limited. METHODS: A cohort of initially uncircumcised, non-Muslim, HIV-uninfected men in the Rakai Community Cohort Study in Uganda was followed between 2009 and 2016 during VMMC scale-up. Self-reported VMMC status was collected and HIV tests performed at surveys conducted every 18 months. Multivariable Poisson regression was used to estimate the incidence rate ratio (IRR) of HIV acquisition in newly circumcised vs uncircumcised men. RESULTS: A total of 3916 non-Muslim men were followed for 17 088 person-years (PY). There were 1338 newly reported VMMCs (9.8/100 PY). Over the study period, the median age of men adopting VMMC declined from 28 years (interquartile range [IQR], 21-35 years) to 22 years (IQR, 18-29 years) (P for trend < .001). HIV incidence was 0.40/100 PY (20/4992.8 PY) among newly circumcised men and 0.98/100 PY (118/12 095.1 PY) among uncircumcised men with an adjusted IRR of 0.47 (95% confidence interval, .28-.78). The effectiveness of VMMC was sustained with increasing time from surgery and was similar across age groups and calendar time. CONCLUSIONS: VMMC programs are highly effective in preventing HIV acquisition in men. The observed effectiveness is consistent with efficacy in clinical trials and supports current recommendations that VMMC is a key component of programs to reduce HIV incidence.


Asunto(s)
Circuncisión Masculina , Infecciones por VIH , Adulto , Estudios de Cohortes , VIH , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Humanos , Masculino , Uganda/epidemiología , Adulto Joven
12.
N Engl J Med ; 377(22): 2154-2166, 2017 11 30.
Artículo en Inglés | MEDLINE | ID: mdl-29171817

RESUMEN

BACKGROUND: To assess the effect of a combination strategy for prevention of human immunodeficiency virus (HIV) on the incidence of HIV infection, we analyzed the association between the incidence of HIV and the scale-up of antiretroviral therapy (ART) and medical male circumcision in Rakai, Uganda. Changes in population-level viral-load suppression and sexual behaviors were also examined. METHODS: Between 1999 and 2016, data were collected from 30 communities with the use of 12 surveys in the Rakai Community Cohort Study, an open, population-based cohort of persons 15 to 49 years of age. We assessed trends in the incidence of HIV on the basis of observed seroconversion data, participant-reported use of ART, participant-reported male circumcision, viral-load suppression, and sexual behaviors. RESULTS: In total, 33,937 study participants contributed 103,011 person-visits. A total of 17,870 persons who were initially HIV-negative were followed for 94,427 person-years; among these persons, 931 seroconversions were observed. ART was introduced in 2004, and by 2016, ART coverage was 69% (72% among women vs. 61% among men, P<0.001). HIV viral-load suppression among all HIV-positive persons increased from 42% in 2009 to 75% by 2016 (P<0.001). Male circumcision coverage increased from 15% in 1999 to 59% by 2016 (P<0.001). The percentage of adolescents 15 to 19 years of age who reported never having initiated sex (i.e., delayed sexual debut) increased from 30% in 1999 to 55% in 2016 (P<0.001). By 2016, the mean incidence of HIV infection had declined by 42% relative to the period before 2006 (i.e., before the scale-up of the combination strategy for HIV prevention) - from 1.17 cases per 100 person-years to 0.66 cases per 100 person-years (adjusted incidence rate ratio, 0.58; 95% confidence interval [CI], 0.45 to 0.76); declines were greater among men (adjusted incidence rate ratio, 0.46; 95% CI, 0.29 to 0.73) than among women (adjusted incidence rate ratio, 0.68; 95% CI, 0.50 to 0.94). CONCLUSIONS: In this longitudinal study, the incidence of HIV infection declined significantly with the scale-up of a combination strategy for HIV prevention, which provides empirical evidence that interventions for HIV prevention can have a population-level effect. However, additional efforts are needed to overcome disparities according to sex and to achieve greater reductions in the incidence of HIV infection. (Funded by the National Institute of Allergy and Infectious Diseases and others.).


Asunto(s)
Antirretrovirales/uso terapéutico , Circuncisión Masculina/estadística & datos numéricos , Infecciones por VIH/epidemiología , Conducta Sexual/estadística & datos numéricos , Adolescente , Adulto , Circuncisión Masculina/tendencias , Femenino , Infecciones por VIH/prevención & control , Infecciones por VIH/virología , Humanos , Incidencia , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Análisis Multivariante , Distribución de Poisson , Uganda/epidemiología , Carga Viral , Adulto Joven
13.
AIDS Behav ; 24(5): 1574-1584, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-31520238

RESUMEN

Cell phones have increased communication and connection across the globe and particularly in sub-Saharan Africa-with potential consequences for the HIV epidemic. We examined the association among ownership of cell phones, sexual behaviors (number of sexual partners, alcohol use before sex, inconsistent condom use), and HIV prevalence. Data were from four rounds (2010-2016) of the Rakai Community Cohort Study (N = 58,275). Sexual behaviors and HIV prevalence were compared between people who owned a cell phone to people who did not own a cell phone. We stratified analysis by younger (15-24 years) and older (25+ years) age groups and by gender. Using logistic regression and after adjusting for sociodemographic characteristics, we found cell phone ownership was independently associated with increased odds of having two or more sexual partners in the past 12 months across age and gender groups (young men AOR 1.67, 95% CI 1.47-1.90; young women AOR 1.28 95% CI 1.08-1.53; older men AOR 1.54 95% CI 1.41-1.69; older women AOR 1.44 95% CI 1.26-1.65). Interestingly, young men who owned cell phones had decreased odds of using condoms inconsistently (AOR 0.66, 95% CI 0.57-0.75). For young women, cell phone ownership was associated with increased odds of using alcohol before sex (AOR 1.38 95% CI 1.17-1.63) and increased odds of inconsistent condom use (AOR 1.40, 95% 1.17-1.67). After adjusting for sociodemographic characteristics, only young women who owned cell phones had increased odds of being HIV positive (AOR 1.27 95% CI 1.07-1.50). This association was not mediated by sexual behaviors (Adjusted for sociodemographic characteristics and sexual behaviors AOR 1.24, 95% CI 1.05-1.46). While cell phone ownership appears to be associated with increased HIV risk for young women, we also see a potential opportunity for future cell phone-based health interventions.


Asunto(s)
Teléfono Celular , Infecciones por VIH , Conducta Sexual , Adolescente , Adulto , Estudios de Cohortes , Estudios Transversales , Femenino , Infecciones por VIH/epidemiología , Humanos , Masculino , Prevalencia , Parejas Sexuales , Uganda/epidemiología , Adulto Joven
14.
AIDS Care ; 31(6): 754-760, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-30360642

RESUMEN

In the era of widespread antiretroviral therapy, few studies have explored the perspectives of the relatives involved in caring for people living with HIV (PLHIV) during periods of ill-health leading up to their demise. In this analysis, we explore the process of care for PLHIV as their death approached, from their relatives' perspective. We apply Tronto's care ethics framework that distinguishes between care-receiving among PLHIV on the one hand, and caring about, caring for and care-giving by their relatives on the other. We draw on 44 in-depth interviews conducted with caregivers following the death of their relatives, in seven rural settings in Eastern and Southern Africa. Relatives suggested that prior to the onset of poor health, few of the deceased had disclosed their HIV status and fewer still were relying on anyone for help. This lack of disclosure meant that some caregivers spoke of enduring a long period of worry, and feelings of helplessness as they were unable to translate their concern and "caring about" into "caring for". This transition often occurred when the deceased became in need of physical, emotional or financial care. The responsibility was often culturally prescribed, rarely questioned and usually fell to women. The move to "care-giving" was characterised by physical acts of providing care for their relative, which lasted until death. Tronto's conceptualisation of caring relationships highlights how the burden of caring often intensifies as family members' caring evolves from "caring about", to "caring for", and eventually to "giving care" to their relatives. This progression can lead to caregivers experiencing frustration, provoking tensions with their relatives and highlighting the need for interventions to support family members caring for PLHIV. Interventions should also encourage PLHIV to disclose their HIV status and seek early access to HIV care and treatment services.


Asunto(s)
Cuidadores/psicología , Familia/psicología , Infecciones por VIH/psicología , Población Rural , Adulto , África del Sur del Sahara , Anciano , Población Negra , Empatía , Femenino , Infecciones por VIH/mortalidad , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Apoyo Social
15.
BMC Public Health ; 19(1): 594, 2019 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-31101045

RESUMEN

BACKGROUND: Intimate partner violence (IPV), HIV and sexually transmitted infections (STI) can contribute to disparities in population health, depending on the individual, social and environmental factors characterizing a setting. To better understand the place-based determinants and patterns of these key interrelated public health problems in Uganda, we compared risk factors for IPV, HIV and STI in fishing, trading and agrarian communities in Rakai, Uganda by gender. METHOD: This study used cross-sectional data collected from 14,464 sexually active men (n = 6531) and women (n = 7933) as part of the Rakai Community Cohort Study, a population-based open cohort study of men and women aged 15-49 years. We used multilevel modified poisson regression models, which incorporated random intercepts for community and households. Factors associated with IPV, HIV and STI were assessed separately for men and women in fishing, trading and agrarian communities. RESULTS: A larger proportion of participants in the fishing communities than those in trading and agrarian communities were HIV positive, engaged in HIV risk behaviors, had STI symptoms and reported perpetration of or victimization by IPV. Female gender was a shared correlate of IPV, HIV and STI in the fishing communities. Engagement in multiple sexual relationships or partner's engagement in multiple relationships were shared correlates of IPV, and HIV in agrarian communities and IPV and STI in trading communities. CONCLUSION: Programs should target factors at multiple levels to reduce risk for syndemic conditions of HIV, STI and IPV in Rakai, Uganda particularly among men and women in fishing communities.


Asunto(s)
Agricultura , Infecciones por VIH/epidemiología , Violencia de Pareja/estadística & datos numéricos , Factores Sexuales , Enfermedades de Transmisión Sexual/epidemiología , Adolescente , Adulto , Estudios de Cohortes , Mercantilización , Estudios Transversales , Femenino , VIH , Humanos , Masculino , Persona de Mediana Edad , Distribución de Poisson , Análisis de Regresión , Factores de Riesgo , Parejas Sexuales , Uganda/epidemiología , Adulto Joven
16.
Sex Transm Infect ; 93(Suppl 3)2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-28615327

RESUMEN

OBJECTIVE: To explore barriers and facilitators to accessing postdiagnosis HIV care in five sub-Saharan African countries. METHODS: In-depth interviews were conducted with 77 people living with HIV (PLHIV) in pre-antiretroviral therapy care or not-yet-in care and 46 healthcare workers. Participants were purposely selected from health and demographic surveillance sites in Karonga (Malawi), Manicaland (Zimbabwe), uMkhanyakude (South Africa), Kisesa (Tanzania) and Rakai and Kyamulibwa (Uganda). Thematic content analysis was conducted, guided by the constructs of affordability, availability and acceptability of care.- RESULTS: Affordability: Transport and treatment costs were a barrier to HIV care, although some participants travelled to distant clinics to avoid being seen by people who knew them or for specific services. Broken equipment and drug stock-outs in local clinics could also necessitate travel to other facilities. Availability: Some facilities did not offer full HIV care, or only offered all services intermittently. PLHIV who frequently travelled complained that care was seldom available to them in places they visited. Acceptability: Severe pain or sickness was a key driver for accessing postdiagnosis care, whereas asymptomatic PLHIV often delayed care-seeking. A belief in witchcraft was a deterrent to accessing clinical care following diagnosis. Changing antiretroviral therapy guidelines generated uncertainty among PLHIV about when to start treatment and delayed postdiagnosis care. PLHIV reported that healthcare workers' knowledge, attitudes and behaviours, and their ability to impart health education, also influenced whether they accessed HIV care. CONCLUSION: Despite efforts to decentralise services over the past decade, many barriers to accessing HIV care persist. There is a need to increase sustained access to care for PLHIV not yet on treatment, with initiatives that encompass biomedical aspects of care alongside considerations for individual and collective challenges they faced. A failure to do so may undermine efforts to achieve universal access to antiretroviral therapy.


Asunto(s)
Infecciones por VIH/terapia , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Atención Primaria de Salud/organización & administración , África del Sur del Sahara/epidemiología , Costo de Enfermedad , Femenino , Infecciones por VIH/diagnóstico , Encuestas de Atención de la Salud , Conocimientos, Actitudes y Práctica en Salud , Humanos , Masculino , Atención Primaria de Salud/normas , Investigación Cualitativa , Juego de Reactivos para Diagnóstico/provisión & distribución , Vigilancia de Guardia , Factores Socioeconómicos , Viaje/estadística & datos numéricos , Carga Viral
17.
JAMA ; 316(2): 182-90, 2016 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-27404186

RESUMEN

IMPORTANCE: Medical male circumcision (MMC) and antiretroviral therapy (ART) are proven HIV prevention interventions, but there are limited data on the population-level effect of scale-up of these interventions in sub-Saharan Africa. Such evaluation is important for planning and resource allocation. OBJECTIVE: To examine whether increasing community MMC and ART coverage was associated with reduced community HIV incidence in Rakai District, Uganda. DESIGN, SETTING, AND PARTICIPANTS: Using person-level data from population-based surveys conducted from 1999 through 2013 in 45 rural Rakai communities, community-level ART and MMC coverage, sociodemographics, sexual behaviors, and HIV prevalence and incidence were estimated in 3 periods: prior to the availability of ART and MMC (1999-2004), during early availability of ART and MMC (2004-2007), and during mature program scale-up (2007-2013). EXPOSURES: Community MMC coverage in males and ART coverage in HIV-positive persons of the opposite sex based on self-reported MMC status and ART use. MAIN OUTCOMES AND MEASURES: Adjusted incidence rate ratios (IRRs) for sex-specific community HIV incidence estimated using multivariable Poisson regression with generalized estimating equations. RESULTS: From 1999 through 2013, 44,688 persons participated in 1 or more surveys (mean age at the first survey, 24.6 years [range, 15-49]; female, 56.5%; mean survey participation rate, 92.6% [95% CI, 92.4%-92.7%]). Median community MMC coverage increased from 19% to 39%, and median community ART coverage rose from 0% to 21% in males and from 0% to 26% in females. Median community HIV incidence declined from 1.25 to 0.84 per 100 person-years in males, and from 1.25 to 0.99 per 100 person-years in females. Among males, each 10% increase in community MMC coverage was associated with an adjusted IRR of 0.87 (95% CI, 0.82-0.93). Comparing communities with MMC coverage more than 40% (mean male community incidence, 1.03 per 100 person-years) with communities with coverage of 10% or less (mean male incidence, 1.69 per 100 person-years), the adjusted IRR was 0.61 (95% CI, 0.43-0.88). For each 10% increase in female self-reported ART coverage, there was no significant reduction in male HIV incidence (adjusted IRR, 0.95 [95% CI, 0.81-1.13]). Comparing communities with female ART coverage more than 20% (mean male incidence, 0.87 per 100 person-years) to communities with female ART coverage of 20% or less (mean male incidence, 1.17 per 100 person-years), the adjusted IRR was 0.77 (95% CI, 0.61-0.98). Neither MMC nor male ART coverage was associated with lower female community HIV incidence. CONCLUSIONS AND RELEVANCE: In Rakai, Uganda, increasing community MMC and female ART coverage was associated with lower community HIV incidence in males. If similar associations are found elsewhere, this would support further scale-up of MMC and ART for HIV prevention in sub-Saharan Africa.


Asunto(s)
Antirretrovirales/uso terapéutico , Circuncisión Masculina , Infecciones por VIH/prevención & control , Adolescente , Adulto , Femenino , Infecciones por VIH/tratamiento farmacológico , Encuestas Epidemiológicas , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Prevalencia , Características de la Residencia , Población Rural , Factores Sexuales , Conducta Sexual , Uganda/epidemiología , Adulto Joven
18.
Aliment Pharmacol Ther ; 59(9): 1111-1121, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38459720

RESUMEN

BACKGROUND: Despite numerous risk factors and serious consequences, little is known about metabolic dysfunction-associated steatotic liver disease (MASLD) at population level in Africa. AIM: The aim of the study was to estimate the prevalence and risk factors of MASLD in people living with and without HIV in Uganda. METHODS: We collected data from 37 communities in South Central Uganda between May 2016 and May 2018. We estimated MASLD prevalence using the fatty liver index and advanced liver fibrosis using the dynamic aspartate-to-alanine aminotransferase ratio. We collected additional data on sociodemographics, HIV and cardiovascular disease (CVD) risk factors. We used multivariable logistic regression to determine the association between HIV, CVD risk factors and MASLD. RESULTS: We included 759 people with HIV and 704 HIV-negative participants aged 35-49. MASLD prevalence was 14% in women and 8% in men; advanced liver fibrosis prevalence was estimated to be <1%. MASLD prevalence was more common in women (15% vs. 13%) and men (9% vs. 6%) with HIV. Being female (odds ratio [OR] = 2.1; 95% confidence interval [CI] = 1.4-3.3) was associated with a higher odds of MASLD after adjustment for confounders; HIV infection was borderline associated with MASLD (OR = 1.4; 95% CI: 1.0-2.0). CONCLUSIONS: In a relatively young cohort in Uganda, 14% of women and 8% of men had MASLD. There was an indication of an association between HIV and MASLD in multivariable analysis. These data are the first to describe the population-level burden of MASLD in sub-Saharan Africa using data from a population-based cohort.


Asunto(s)
Enfermedades Cardiovasculares , Hígado Graso , Infecciones por VIH , Enfermedades Metabólicas , Masculino , Femenino , Humanos , Estudios Transversales , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Uganda/epidemiología , Prevalencia , Factores de Riesgo , Cirrosis Hepática/complicaciones , Cirrosis Hepática/epidemiología , Aspartato Aminotransferasas , Hígado Graso/epidemiología
19.
medRxiv ; 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-38558994

RESUMEN

HIV incidence has been declining in Africa with scale-up of HIV interventions. However, there is limited data on HIV evolutionary trends in African populations with waning epidemics. We evaluated changes in HIV viral diversity and genetic divergence in southern Uganda over a twenty-five-year period spanning the introduction and scale-up of HIV prevention and treatment programs using HIV sequence and survey data from the Rakai Community Cohort Study, an open longitudinal population-based HIV surveillance cohort. Gag (p24) and env (gp41) HIV data were generated from persons living with HIV (PLHIV) in 31 inland semi-urban trading and agrarian communities (1994 to 2018) and four hyperendemic Lake Victoria fishing communities (2011 to 2018) under continuous surveillance. HIV subtype was assigned using the Recombination Identification Program with phylogenetic confirmation. Inter-subtype diversity was estimated using the Shannon diversity index and intra-subtype diversity with the nucleotide diversity and pairwise TN93 genetic distance. Genetic divergence was measured using root-to-tip distance and pairwise TN93 genetic distance analyses. Evolutionary dynamics were assessed among demographic and behavioral sub-groups, including by migration status. 9,931 HIV sequences were available from 4,999 PLHIV, including 3,060 and 1,939 persons residing in inland and fishing communities, respectively. In inland communities, subtype A1 viruses proportionately increased from 14.3% in 1995 to 25.9% in 2017 (p<0.001), while those of subtype D declined from 73.2% in 1995 to 28.2% in 2017 (p<0.001). The proportion of viruses classified as recombinants significantly increased by more than four-fold. Inter-subtype HIV diversity has generally increased. While p24 intra-subtype genetic diversity and divergence leveled off after 2014, diversity and divergence of gp41 increased through 2017. Inter- and intra-subtype viral diversity increased across all population sub-groups, including among individuals with no recent migration history or extra-community sexual partners. This study provides insights into population-level HIV evolutionary dynamics in declining African HIV epidemics following the scale-up of HIV prevention and treatment programs. Continued molecular surveillance may provide a better understanding of the dynamics driving population HIV evolution and yield important insights for epidemic control and vaccine development.

20.
medRxiv ; 2024 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-38712115

RESUMEN

Introduction: To prioritize and tailor interventions for ending AIDS by 2030 in Africa, it is important to characterize the population groups in which HIV viraemia is concentrating. Methods: We analysed HIV testing and viral load data collected between 2013-2019 from the open, population-based Rakai Community Cohort Study (RCCS) in Uganda, to estimate HIV seroprevalence and population viral suppression over time by gender, one-year age bands and residence in inland and fishing communities. All estimates were standardized to the underlying source population using census data. We then assessed 95-95-95 targets in their ability to identify the populations in which viraemia concentrates. Results: Following the implementation of Universal Test and Treat, the proportion of individuals with viraemia decreased from 4.9% (4.6%-5.3%) in 2013 to 1.9% (1.7%-2.2%) in 2019 in inland communities and from 19.1% (18.0%-20.4%) in 2013 to 4.7% (4.0%-5.5%) in 2019 in fishing communities. Viraemia did not concentrate in the age and gender groups furthest from achieving 95-95-95 targets. Instead, in both inland and fishing communities, women aged 25-29 and men aged 30-34 were the 5-year age groups that contributed most to population-level viraemia in 2019, despite these groups being close to or had already achieved 95-95-95 targets. Conclusions: The 95-95-95 targets provide a useful benchmark for monitoring progress towards HIV epidemic control, but do not contextualize underlying population structures and so may direct interventions towards groups that represent a marginal fraction of the population with viraemia.

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