Publications by authors named "Niklaus D Labhardt"

In people with HIV-1 (PWH), (MTB) infection poses a significant threat. While active tuberculosis (TB) accelerates immunodeficiency, the interaction between MTB and HIV-1 during asymptomatic phases remains unclear. Analysis of peripheral blood mononuclear cells (PBMC) transcriptomic profiles in PWH, with and without controlled viral loads, revealed distinct clustering in MTB-infected individuals.

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Improving access to essential health services requires the development of innovative health service delivery models and their scientific assessment in often large-scale pragmatic trials. In many low- and middle-income countries, lay Community Health Workers (CHWs) play an important role in delivering essential health services. As trusted members of their communities with basic medical training, they may also contribute to health data collection.

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Background: Cervical cancer is the fourth most common cancer in women worldwide, and women with human immunodeficiency virus (HIV) are particularly at risk of developing it. Regular screening effectively prevents morbidity and mortality. This mixed-methods study quantitatively assessed cervical cancer screening uptake and qualitatively explored the process of undergoing cervical cancer screening to understand possible reasons for delayed screening among women with HIV in Lesotho.

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In Lesotho, the hypertension and diabetes care cascades are unknown. We measured awareness, treatment, and control of hypertension and diabetes among adults ≥18 years and identified factors associated with each step of the cascade, based on data from a population-based, cross-sectional survey in 120 randomly sampled clusters in the districts of Butha-Buthe and Mokhotlong from 1st November 2021 to 31st August 2022. We used multivariable logistic regression to assess associations.

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Background: The World Health Organization's (WHO) Mental Health Gap Action Programme (mhGAP) is a validated intervention that can be provided by non-specialised healthcare workers to individuals with unhealthy alcohol use. However, it typically requires several in-person sessions at a health facility, which may limit its feasibility and effectiveness in remote settings. This trial compares mhGAP-Standard, a 4 to 6 in-person session intervention, to mhGAP-Remote, a 1 in-person session intervention followed by 8 week of short message service (SMS) in Lesotho.

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Background: To improve tuberculosis case-finding, rapid, non-sputum triage tests need to be developed according to the World Health Organization target product profile (TPP) (>90% sensitivity, >70% specificity). We prospectively evaluated and compared artificial intelligence-based, computer-aided detection software, CAD4TBv7, and C-reactive protein assay (CRP) as triage tests at health facilities in Lesotho and South Africa.

Methods: Adults (≥18 years) presenting with ≥1 of the 4 cardinal tuberculosis symptoms were consecutively recruited between February 2021 and April 2022.

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Article Synopsis
  • Tumor necrosis factor inhibitors (TNFi), like adalimumab, can increase the risk of tuberculosis (TB) reactivation; however, instances of Mycobacterium bovis infections are rare.
  • A case involved a 78-year-old woman with M. bovis-related disseminated TB, which was initially misdiagnosed as sarcoidosis, and resulted in her death despite a negative TB test (IGRA) before treatment with TNFi.
  • The study emphasizes the need for careful consideration of TB risks in immunosuppressed patients, highlighting the importance of patient history regarding potential exposure to unpasteurized dairy products, even in regions officially free of bovine TB.
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Objectives: Trials within Cohorts (TwiCs) is a pragmatic design approach that may overcome frequent challenges of traditional randomized trials such as slow recruitment, burdensome consent procedures, or limited external validity. This scoping review aims to identify all randomized controlled trials using the TwiCs design and to summarize their design characteristics, ways to obtain informed consent, output, reported challenges and mitigation strategies.

Study Design And Setting: Systematic search of Medline, Embase, Cochrane, trial registries and citation tracking up to December 2022.

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Background: Children and adolescents with HIV taking antiretroviral therapy (ART) have high rates of viraemia. We assessed if genotypic resistance testing (GRT) to inform onward treatment improved treatment outcomes in Lesotho and Tanzania, two countries with little access to GRT.

Methods: The Genotype-Informed Versus Empirical Management of Viremia (GIVE MOVE) open-label, parallel-group randomised controlled trial enrolled children and adolescents with HIV between the ages of 6 months and 19 years, taking ART, and with a viral load at least 400 copies per mL.

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Background: Bivalent messenger RNA (mRNA) vaccines, designed to combat emerging severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants, incorporate ancestral strains and a new variant. Our study assessed the immune response in previously vaccinated individuals of the Swiss HIV Cohort Study (SHCS) and the Swiss Transplant Cohort Study (STCS) following bivalent mRNA vaccination.

Methods: Eligible SHCS and STCS participants received approved bivalent mRNA SARS-CoV-2 vaccines (mRNA-1273.

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Background: Arterial hypertension (aHT) is a major cause for premature morbidity and mortality. Control rates remain poor, especially in low- and middle-income countries. Task-shifting to lay village health workers (VHWs) and the use of digital clinical decision support systems may help to overcome the current aHT care cascade gaps.

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Background: Infection prevention and control (IPC) research has long neglected the home healthcare sector with its unique challenges. This study aimed to gain an understanding of the barriers to the implementation of infection prevention practices relevant to this setting, the related attitudes, perceived relevance and priorities from the home healthcare worker perspective in Switzerland.

Methods: The mixed-method study involved semi-structured interviews (n = 18) and an anonymous web-based survey (n = 144) among nursing assistants and nurses from two home healthcare organizations in northwest Switzerland.

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To describe a suspected diphtheria outbreak in a Swiss asylum seeker reception centre, and to analyse its management response regarding testing and vaccination. We retrospectively analysed clinical, microbiology, and case management data of all asylum seekers tested for between 28th August and 31st December 2022 while residing at the centre. Results are reported descriptively.

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Article Synopsis
  • * A study in North-East Lesotho analyzed dolutegravir resistance among participants who switched from older ART regimens, finding that out of 15,349 individuals, only 1.0% showed specific virological clues for potential resistance.
  • * Results indicated that 9.4% of those evaluated for resistance had varying levels of dolutegravir resistance, highlighting the need for improved detection and management strategies across Africa for those on ART.
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Background: Human immunodeficiency virus low-level viremia (LLV) is associated with subsequent treatment failure at least with non nucleoside reverse transcriptase inhibitor (NNRTI)-containing antiretroviral therapy. Data on implications of LLV occurring under dolutegravir, which has largely replaced NNRTIs in Africa, are scarce, however.

Methods: We included adults with human immunodeficiency virus in Lesotho who had ≥2 viral loads (VLs) taken after ≥6 months of NNRTI- or dolutegravir-based antiretroviral therapy.

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Background: Treatment failure is common among children and adolescents with HIV. Antiretroviral therapy (ART) containing dolutegravir has recently been rolled out across Africa, though long-term real-world data in paediatric populations are lacking. Here, we report treatment outcomes among children and adolescents in Lesotho who transitioned from nonnucleoside reverse transcriptase inhibitor (NNRTI)-based to dolutegravir-based ART through 2 years' follow-up.

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Infection prevention and control (IPC) research has focused on the hospital setting, neglecting the rapidly expanding home healthcare (HHC) sector. Current infection prevention recommendations do not reflect the challenges specific to the HHC setting. This scoping review considered any original studies reporting on barriers or facilitators to infection prevention practices in the context of HHC.

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In settings where access to expert echocardiography is limited, focused echocardiography, combined with artificial intelligence (AI)-supported analysis, may improve diagnosis and monitoring of left ventricular hypertrophy (LVH). Sixteen nurses/nurse-assistants without prior experience in echocardiography underwent a 2-day hands-on intensive training to learn how to assess parasternal long axis views (PLAX) using an inexpensive hand-held ultrasound device in Lesotho, Southern Africa. Loops were stored on a cloud-drive, analyzed using deep learning algorithms at the University Hospital Basel, and afterwards confirmed by a board-certified cardiologist.

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Introduction: The prevalence of type 2 diabetes mellitus (T2DM) and associated morbidity and mortality are increasing in sub-Saharan Africa (SSA). To facilitate access to quality care and improve treatment outcomes, there is a need for innovative community care models and optimized use of non-physician healthcare workers bringing diagnosis and care closer to patients' homes.

Aim: We aimed to describe with a scoping review different models of community-based care for non-pregnant adults with T2DM in SSA, and to synthesize the outcomes in terms of engagement in care, blood sugar control, acceptability, and end-organ damage.

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Introduction: Prevalence of elevated blood pressure (BP) and diabetes mellitus (DM) is increasing in sub-Saharan Africa. Data on target organ damage such as retinopathy, left ventricular hypertrophy (LVH), renal impairment and peripheral neuropathy (PN) among persons with elevated BP and/or DM in sub-Saharan Africa remain scarce.

Aim: To determine at community-level the prevalence of retinopathy, LVH, renal impairment, and PN among adults with elevated BP and/or DM, and assess the association of elevated BP and/or DM with target organ damage in Lesotho.

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Background: Type 2 diabetes (T2D) poses a growing public health burden, especially in low- and middle-income countries (LMICs). Task-shifting to lay village health workers (VHWs) and the use of digital clinical decision support systems (CDSS) are promising approaches to tackle the current T2D care gap in LMICs. However, evidence on the effectiveness of lay worker-led T2D care models, in which VHWs initiate and monitor drug treatment in addition to community-based screening and referral services, is lacking.

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Article Synopsis
  • - This study examines the effectiveness of different blood pressure measurement methods, including standard blood pressure measurements (SBPM) and unattended automated blood pressure measurements (uABP), in detecting hypertension, with 24-hour ambulatory blood pressure monitoring (24h-ABPM) serving as the reference standard.
  • - Conducted in Northern Lesotho, the study involved 275 participants, comparing their blood pressure readings taken on the same day and the next day against the 24h-ABPM results to determine diagnostic accuracy.
  • - The findings revealed that SBPM had the greatest discrepancy from 24h-ABPM readings, particularly for systolic measurements, while uABP showed better alignment, indicating that automated methods might be more accurate
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Infection with Mycobacterium tuberculosis (MTB) remains one of the most important opportunistic infections in people with HIV-1 (PWH). While active Tuberculosis (TB) leads to rapid progression of immunodeficiency in PWH, the interaction between MTB and HIV-1 during the asymptomatic phase of both infections remains poorly understood. In a cohort of individuals with HIV (PWH) with and without suppressed HIV-1 viral load, the transcriptomic profiles of peripheral blood mononuclear cells (PBMC) clustered in individuals infected with Mycobacterium tuberculosis (MTB) compared to carefully matched controls.

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Article Synopsis
  • - The study aimed to evaluate the prevalence of cardiovascular risk factors (CVDRFs) in Lesotho, where recent data was lacking, by conducting a cross-sectional survey among over 6,000 adults aged 18 and older across multiple districts.
  • - Results showed significant rates of CVDRFs: 39.9% were overweight, 5.3% had diabetes, 21.6% faced elevated blood pressure, and 24.9% used tobacco, with women more likely to have multiple risk factors.
  • - The findings highlight the high prevalence of CVDRFs in Lesotho, emphasizing the urgent need for improved prevention and care programs in the region.
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