Publications by authors named "Temfack E"

Introduction: In low-and-middle-income-countries (LMIC), viral suppression is defined as plasma viral load (PVL) below 1000 copies/mL (low-level viremia [LLV]) and threshold for HIV drug resistance (HIVDR) testing. However, there is evidence that drug resistance mutations (DRMs) may emerge at LLV, thus compromising antiretroviral treatment (ART) response We evaluated sequencing success rates (SSR) at LLV, described HIVDR profiles and adequacy with potential efficacy of tenofovir-lamivudine-dolutegravir (TLD).

Methods: A cross-sectional study was conducted among individuals with LLV at the Chantal BIYA International Reference Centre, Yaoundé, Cameroon from January 2020 through August 2021.

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Article Synopsis
  • Enhancing clinical trial skills in Africa is crucial for improving the continent’s ability to prevent, prepare for, and respond to pandemics.
  • The text highlights the major challenges faced in conducting clinical trials in Africa and shares insights from the CONCVACT project, which focused on COVID-19 vaccine trials.
  • Key takeaways include the need for regional cooperation, building local capacities, and creating standardized procedures for clinical trials.
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Cryptococcosis is a major worldwide disseminated invasive fungal infection. Cryptococcosis, particularly in its most lethal manifestation of cryptococcal meningitis, accounts for substantial mortality and morbidity. The breadth of the clinical cryptococcosis syndromes, the different patient types at-risk and affected, and the vastly disparate resource settings where clinicians practice pose a complex array of challenges.

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argue that a better understanding of the complex sociopolitical drivers of distrust in vaccination will increase the potential of social media to rebuild vaccine confidence

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Article Synopsis
  • Cryptococcal meningitis is a major cause of death in people with HIV/AIDS, but there's still a limited understanding of how the fungus changes during infection.
  • A study analyzed the whole genomes of 372 clinical isolates from patients in Malawi and Cameroon, revealing that Cameroonian isolates are more genetically uniform compared to their Malawian counterparts, and show different rates of mutations in key genes.
  • Longitudinal samples taken from patients in Cameroon highlighted genetic changes during infection and revealed mixed infections in 13% of patients, showcasing the evolutionary dynamics of the fungus in this context.
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On 20th September 2022, Uganda declared the 7th outbreak of Ebola virus disease (EVD) caused by the Sudan Ebola strain following the confirmation of a case admitted at Mubende Regional Referral Hospital. Upon confirmation, the Government of Uganda immediately activated the national incident management system to initiate response activities. Additionally, a multi-country emergency stakeholder meeting was held in Kampala; convening Ministers of Health from neighbouring Member States to undertake cross-border preparedness and response actions.

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Article Synopsis
  • Systematic reviews (SR) and meta-analyses (MA) are essential tools for answering clinical questions and helping with clinical decision-making through thorough literature analysis.
  • The collection titled "Systematic Reviews on Infectious Diseases" aims to summarize significant evidence on various key topics related to infectious diseases.
  • This collection is designed to enhance knowledge and understanding in the field by delivering clear and reproducible findings.
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Current WHO/UNICEF estimates of routine childhood immunization coverage reveal the largest sustained decline in uptake in three decades with pronounced setbacks across Africa. Although the COVID-19 pandemic has induced significant supply and delivery disruptions, the impact of the pandemic on vaccine confidence is less understood. We here examine trends in vaccine confidence across eight sub-Saharan countries between 2020 and 2022 via a total of 17,187 individual interviews, conducted via a multi-stage probability sampling approach and cross-sectional design and evaluated using Bayesian methods.

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Background: Many countries are now replacing non-nucleoside reverse transcriptase inhibitor (NNRTI)-based first-line antiretroviral therapy (ART) with a regimen containing tenofovir disoproxil fumarate, lamivudine, and dolutegravir (TLD). Recognising laboratory limitations, Malawi opted to transition those on NNRTI-based first-line ART to TLD without viral load testing. We aimed to assess viral load and HIV drug resistance during 1 year following transition to TLD without previous viral load testing.

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Background: An increasing proportion of patients with HIV-associated cryptococcal meningitis have received antiretroviral therapy (ART) before presentation. There is some evidence suggesting an increased 2-week mortality in those receiving ART for <14 days compared with those on ART for >14 days. However, presentation and outcomes for cryptococcal meningitis patients who have recently initiated ART, and those with virologic failure and/or nonadherence, are not well described.

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Uncommon, or rare, yeast infections are on the rise given increasing numbers of patients who are immunocompromised or seriously ill. The major pathogens include those of the genera Geotrichum, Saprochaete, Magnusiomyces, and Trichosporon (ie, basidiomycetes) and Kodamaea, Malassezia, Pseudozyma (ie, now Moesziomyces or Dirkmeia), Rhodotorula, Saccharomyces, and Sporobolomyces (ie, ascomycetes). A considered approach to the complex, multidisciplinary management of infections that are caused by these pathogens is essential to optimising patient outcomes; however, management guidelines are either region-specific or require updating.

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Aim: We determined the prevalence and factors associated with couple infertility in three hospitals in Douala, Cameroon.

Methods: We conducted a cross-sectional study from December 18th 2015 to March 18th 2016 in three public hospitals in Douala. Three hundred and sixty participants were studied prospectively for associated factors using a multivariate logistic regression model and 4732 files were studied retrospectively for the prevalence of infertility.

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Among 472 patients with human immunodeficiency virus-associated cryptococcal meningitis, 16% had severe visual loss at presentation, and 46% of these were 4-week survivors and remained severely impaired. Baseline cerebrospinal fluid opening pressure ≥40 cmHO (adjusted odds ratio [aOR], 2.56; 95% confidence interval [CI], 1.

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Article Synopsis
  • Cryptococcal antigen (CrAg) detection is crucial for timely antifungal treatment in adults with HIV suspected of having cryptococcal meningitis (CM), according to a study that included 3600 participants.
  • The study analyzed serum and cerebrospinal fluid (CSF) CrAg sensitivity (99.7% for serum, 98.8% for CSF) and specificity (94.1% for serum, 99.3% for CSF) and found a high agreement (98%) between CSF CrAg and CSF culture results.
  • The findings suggest that a negative serum CrAg can rule out CM, while a positive result indicates the need for antifungal therapy, and a positive CS
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Background: There is still a dearth of knowledge on the burden of HEV infection in the global population of pregnant women. Therefore, we conducted a systematic review and meta-analysis to estimate the global burden of HEV infection in pregnancy.

Methods: We searched PubMed, Embase, Web of Knowledge, and Global Index Medicus to identify articles published until January 26, 2020.

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Purpose Of Review: Defective cell-mediated immunity is a major risk factor for cryptococcosis, a fatal disease if untreated. Cryptococcal meningitis (CM), the main presentation of disseminated disease, occurs through hematogenous spread to the brain from primary pulmonary foci, facilitated by yeast virulence factors. We revisit remarkable recent improvements in the prevention, diagnosis and management of CM.

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Better knowledge of the face of the current dengue virus (DENV) epidemiology in Africa can help to implement efficient strategies to curb the burden of dengue fever. We conducted this systematic review and meta-analysis to determine the prevalence of DENV infection in Africa. We searched PubMed, EMBASE, African Journals Online, and Africa Index Medicus from January 1, 2000 to June 10, 2019 without any language restriction.

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The recent development of highly sensitive and specific point-of-care tests has made it possible to diagnose HIV-associated cryptococcal meningitis within minutes. However, diagnostic advances have not been matched by new antifungal drugs and treatment still relies on old off-patent drugs: amphotericin B, flucytosine and fluconazole. Cryptococcal meningitis treatment is divided in three phases: induction, consolidation and maintenance.

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Background: To set priorities for efficient control of acute respiratory tract infection (ARTI) in Africa, it is necessary to have accurate estimate of its burden, especially among HIV-infected populations.

Objectives: To compare case fatality rate (CFR) and viral aetiologies of ARTI between HIV-positive and HIV-negative populations in Africa.

Study Design: We searched PubMed, EMBASE, Web of Knowledge, Africa Journal Online, and Global Index Medicus to identify studies published from January 2000 to April 2018.

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Background: Mortality from cryptoccocal meningitis remains high. The ACTA trial demonstrated that, compared with 2 weeks of amphotericin B (AmB) plus flucystosine (5FC), 1 week of AmB and 5FC was associated with lower mortality and 2 weeks of oral flucanozole (FLU) plus 5FC was non-inferior. Here, we assess the cost-effectiveness of these different treatment courses.

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Background: Mortality from cryptococcal meningitis remains very high in Africa. In the Advancing Cryptococcal Meningitis Treatment for Africa (ACTA) trial, 2 weeks of fluconazole (FLU) plus flucytosine (5FC) was as effective and less costly than 2 weeks of amphotericin-based regimens. However, many African settings treat with FLU monotherapy, and the cost-effectiveness of adding 5FC to FLU is uncertain.

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In 2018, WHO issued guidelines for the diagnosis, prevention, and management of HIV-related cryptococcal disease. Two strategies are recommended to reduce the high mortality associated with HIV-related cryptococcal meningitis in low-income and middle-income countries (LMICs): optimised combination therapies for confirmed meningitis cases and cryptococcal antigen screening programmes for ambulatory people living with HIV who access care. WHO's preferred therapy for the treatment of HIV-related cryptococcal meningitis in LMICs is 1 week of amphotericin B plus flucytosine, and the alternative therapy is 2 weeks of fluconazole plus flucytosine.

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Article Synopsis
  • * In a study involving 35,644 participants, the prevalence of blood CrAg positivity was found to be 6%, with 33% of CrAg-positive individuals showing asymptomatic CM.
  • * Using preemptive fluconazole therapy significantly lowered CM incidence from 21.4% to 5.7%, and additional lumbar puncture screening nearly eliminated CM cases, although CrAg-positive individuals still faced higher overall mortality rates.
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