Publications by authors named "Sharon Tsui"

Late presentation to HIV care, i.e., presenting with < 200 CD4 cells/mL, is associated with higher mortality and worse outcomes.

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Article Synopsis
  • Achieving universal HIV testing and treatment requires targeted efforts for those with advanced HIV, as shown in interviews with healthcare workers and people living with HIV in Kampala, Uganda.
  • High stigma and low social support were identified as major barriers to care, with specific issues like alcohol abuse affecting men and fears of violence impacting women.
  • Recommendations for improvement include addressing stigma, enhancing social support, and implementing strategies such as assisted disclosure and increased privacy in clinics to encourage timely treatment initiation.
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Objective: How clinics structure the delivery of antiretroviral therapy (ART) services may influence patient adherence. We assessed the relationship between models of HIV care delivery and adherence as measured by medication possession ratio (MPR) among treatment-experienced adults in Tanzania, Uganda and Zambia.

Methods: Eighteen clinics were grouped into three models of HIV care.

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Background: Organization of HIV care and treatment services, including clinic staffing and services, may shape clinical and financial outcomes, yet there has been little attempt to describe different models of HIV care in sub-Saharan Africa (SSA). Information about the relative benefits and drawbacks of different models could inform the scale-up of antiretroviral therapy (ART) and associated services in resource-limited settings (RLS), especially in light of expanded client populations with country adoption of WHO's test and treat recommendation.

Methods: We characterized task-shifting/task-sharing practices in 19 diverse ART clinics in Tanzania, Uganda, and Zambia and used cluster analysis to identify unique models of service provision.

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Introduction: In accordance with global testing and treatment targets, many countries are seeking ways to reach the "90-90-90" goals, starting with diagnosing 90% of all people with HIV. Quality HIV testing services are needed to enable people with HIV to be diagnosed and linked to treatment as early as possible. It is essential that opportunities to reach people with undiagnosed HIV are not missed, diagnoses are correct and HIV-negative individuals are not inadvertently initiated on life-long treatment.

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Article Synopsis
  • Monitoring the prevalence of advanced HIV disease during ART initiation is crucial for evaluating treatment outcomes and shaping prevention strategies.* * Between 2004-2015, data from 694,138 ART patients in 10 high-burden countries showed a significant decline in advanced disease at ART start, particularly in Haiti, Mozambique, and Namibia.* * Despite improvements, around one-third of new ART patients in 2015 still began treatment with advanced HIV disease, highlighting the need for earlier testing and the adoption of "treat-all" guidelines from WHO to further reduce mortality and incidence.*
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Traditional healers provide healthcare to a substantial proportion of people living with HIV infection (PLHIV) in high HIV burden countries in sub-Saharan Africa. However, the impact on the health of retained patients visiting traditional healers is unknown. In 2011, a study to asses adherence to anti-retroviral therapy (ART) performed in 18 purposefully selected HIV treatment centers in Tanzania, Zambia and Uganda showed that 'consulting a traditional healer/herbalist because of HIV' was an independent risk factor for incomplete ART adherence.

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Introduction: Influenza surveillance was conducted in Uganda from October 2008 to December 2014 to identify and understand the epidemiology of circulating influenza strains in out-patient clinic attendees with influenza-like illness and inform control strategies.

Methodology: Surveillance was conducted at five hospital-based sentinel sites. Nasopharyngeal and/or oropharyngeal samples, epidemiological and clinical data were collected from enrolled patients.

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Objectives: To identify the reasons patients miss taking their antiretroviral therapy (ART) and the proportion who miss their ART because of symptoms; and to explore the association between symptoms and incomplete adherence.

Methods: Secondary analysis of data collected during a cross-sectional study that examined ART adherence among adults from 18 purposefully selected sites in Tanzania, Uganda, and Zambia. We interviewed 250 systematically selected patients per facility (≥ 18 years) on reasons for missing ART and symptoms they had experienced (using the HIV Symptom Index).

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Equitable access to antiretroviral therapy (ART) for men and women with human immunodeficiency virus (HIV) infection is a principle endorsed by most countries and funding bodies, including the U.S. President's Emergency Plan for AIDS (acquired immunodeficiency syndrome) Relief (PEPFAR) (1).

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Objectives: To characterize antiretroviral therapy (ART) adherence across different programmes and examine the relationship between individual and programme characteristics and incomplete adherence among ART clients in sub-Saharan Africa.

Design: A cross-sectional study.

Methods: Systematically selected ART clients (≥18 years; on ART ≥6 months) attending 18 facilities in three countries (250 clients/facility) were interviewed.

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Although scale-up of antiretroviral therapy (ART) since 2005 has contributed to declines of about 30% in the global annual number of human immunodeficiency (HIV)-related deaths and declines in global HIV incidence, estimated annual HIV-related deaths among adolescents have increased by about 50% and estimated adolescent HIV incidence has been relatively stable. In 2012, an estimated 2,500 (40%) of all 6,300 daily new HIV infections occurred among persons aged 15-24 years. Difficulty enrolling adolescents and young adults in ART and high rates of loss to follow-up (LTFU) after ART initiation might be contributing to mortality and HIV incidence in this age group, but data are limited.

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Background: In February 2012, the Lesotho Ministry of Health launched a national voluntary medical male circumcision (VMMC) program. To assess the motivations for seeking VMMC, a cross-sectional mixed methods study was conducted among clients aged 18 years and older at four sites.

Methods: A total of 161 men participated in individual survey interviews and 35 participated in four focus group discussions.

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Objectives: We assessed retention and predictors of attrition (recorded death or loss to follow-up) in antiretroviral treatment (ART) clinics in Tanzania, Uganda and Zambia.

Methods: We conducted a retrospective cohort study among adults (≥18 years) starting ART during 2003-2010. We purposefully selected six health facilities per country and randomly selected 250 patients from each facility.

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This study reports on the acceptability of 1% tenofovir microbicide gel among participants randomised to the coitally-associated use (n = 50) or daily use (n = 50) arms of a Phase II clinical trial in Pune, India. In a 6-month follow-up study, information on behavioural domains was collected on a 6-point Likert scale and gel acceptability was measured on a 5-point Likert scale. Random intercept logistic modelling was performed to examine the simultaneous effects of study arm, follow-up time, sociodemographic factors and behavioural domains on gel acceptability.

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The inconclusive results of past trials and recent findings of partial protection of Tenofovir 1% gel underscore the need to better understand product adherence in microbicide trials. This study aimed to identify factors predicting couples' ability to sustain topical gel and condom use during clinical trial participation. We enrolled 100 Indian participants of a randomized, controlled safety trial of Tenofovir 1% gel (CT cohort) and 100 similar women who were ineligible or declined trial participation (NCT cohort).

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Research suggests that the HIV/AIDS epidemic has spread to monogamous women in India. Gender inequalities prevent women from asserting control over the circumstances that increase their vulnerability to infection. Men control most of the sexual decision-making.

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Background And Objectives: Female sex workers (FSWs) are thought to be at heightened risk for unintended pregnancy, although sexual and reproductive health interventions reaching these populations are typically focused on the increased risk of sexually transmitted infections. The objective of this study of FSWs in Kenya is to document patterns of contraceptive use and unmet need for contraception.

Methods: This research surveys a large sample of female sex workers (N = 597) and also uses qualitative data from focus group discussions.

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Few studies in Africa provide detailed descriptions of the vulnerabilities of female sex workers (FSW) to sexual and physical violence, and how this impacts on their HIV risk. This qualitative study documents FSW's experiences of violence in Mombasa and Naivasha, Kenya. Eighty-one FSW who obtained clients from the streets, transportation depots, taverns, discos and residential areas were recruited through local sex workers trained as peer counsellors to participate in eight focus-group discussions.

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