6,213 results match your criteria: "Lusaka; and Centers for Disease Control and Prevention M.M.-E.[Affiliation]"

Objectives: To eliminate vertical transmission of HIV, global institutions recommend using a risk-guided approach for HIV prevention services in antenatal and postnatal settings. Identifying predictors of maternal HIV acquisition can inform the development of risk-guided approaches, but individual studies of predictors can have limited power and generalizability.

Methods: We conducted a systematic review and narrative synthesis to identify common predictors of maternal HIV acquisition in sub-Saharan Africa (SSA).

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Background: Adolescent pregnancies pose a risk to young mothers and their babies. In Zambia, one third of 18-year-old girls have given birth. Poverty, low secondary school enrolment, misinformation, and community norms contribute to early childbearing.

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Barriers and facilitators of a large clinical trial on prevention of HIV transmission through breastfeeding in Lusaka, Zambia: a qualitative study.

BMC Public Health

December 2024

Pathogenesis and Control of Chronic and Emerging Infections, Univ Montpellier, INSERM, EFS, Univ Antilles, Montpellier, France.

Article Synopsis
  • The PROMISE-EPI trial tested a combination of strategies to reduce HIV transmission during breastfeeding, showing better results than standard care, particularly through early diagnosis of infants and monitoring of maternal viral load.
  • In Zambia, the standard care differs with more complex preventative measures, leading to an exploration of facilitators and barriers related to the new intervention to inform future implementation.
  • Qualitative interviews and focus groups highlighted the benefits of integrating key intervention components for immediate action, trust in healthcare, and potential setbacks during disruptions like the COVID-19 pandemic.
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  • The study focused on TB trends in three health facilities in Chongwe District, Zambia, from 2015-2018, using 2014 data for comparison.
  • A significant increase in presumptive TB cases was observed at Chongwe Health Centre and Chongwe District Hospital, but the proportion of bacteriologically positive TB cases dropped substantially by late 2018.
  • The introduction of GeneXpert technology improved screening but seemingly contributed to lower treatment success rates in 2017, indicating a complex relationship between diagnosis and outcomes.
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Background: Accurate diagnosis of human immunodeficiency virus (HIV) infection is dependent on using established national HIV testing algorithm. The purpose of this study was to review published articles to identify, and apply lessons learned to determine factors affecting transition of HIV testing algorithm for countries that have attained HIV epidemic control.

Materials And Methods: We systematically searched peer-reviewed articles from online scientific databases; PubMed and Google Scholar from January 2019 to March 2024, using defined search phrases to extract articles.

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Article Synopsis
  • Stunting is a major global health issue, with research indicating that boys are more affected than girls, as seen in a study of 7,486 Zambian infants where the stunting rates were 34.5% for boys compared to 25.7% for girls.
  • The study looked at various risk factors associated with stunting such as maternal characteristics and caregiving, finding few differences in exposure based on sex, although maternal marital status had some differential effects.
  • Overall, despite boys being longer than girls, both sexes showed similar patterns in growth measures, suggesting that factors influencing growth are complex and not solely dependent on sex.
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Introduction: Spinal health in children and adolescents has global implications, impacting school attendance, academic performance and physical activity. Effective school-based interventions are essential for promoting spinal health literacy, positive behaviours and academic success.

Objectives: This review aims to collect data on school-based interventions for spinal health in children and adolescents over the past two decades.

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Objectives: The study aimed to assess the predictors of upper limb motor recovery in stroke survivors.

Design: Pre-post test study design.

Setting: Conducted in two centres (First Level Hospital and University Teaching Hospital in Lusaka).

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Introduction: Accurate information on context and implementation of public health interventions is necessary to replicate, adapt, and scale effective interventions and to interpret evaluations. Reporting the context and implementation of water, sanitation, and hygiene (WASH) interventions has been inconsistent and incomplete.

Methods: To improve the reporting of WASH interventions, we developed the Template for Intervention Description and Replication for WASH (TIDieR-WASH) checklist and guide, by adapting and expanding the original TIDieR guide.

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Basic and preclinical epilepsy research Scientists' perception of clinical epileptology.

Epilepsia

January 2025

Saul R. Korey Department of Neurology, Dominick P. Purpura Department of Neuroscience, Isabelle Rapin Division of Child Neurology, Albert Einstein College of Medicine, Bronx, New York, USA.

The interaction between basic science epilepsy researchers and clinical epileptologists is a longstanding issue. Efforts to provide opportunities for a dialogue between preclinical and clinical epilepsy professionals are crucial to reduce the knowledge gap between them and improve the translational success of neurobiology-based research. The International League Against Epilepsy (ILAE) Research and Innovation Task Force circulated a survey to investigate the need for an update on new clinical epilepsy concepts within the basic science community.

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Article Synopsis
  • Fluoxetine (FLX) is a common antidepressant that can negatively affect male fertility by increasing Reactive Oxygen Species (ROS), prompting this study on the protective effects of Vitamin C.
  • The study involved treating male Wistar rats with fluoxetine and various doses of Vitamin C over 60 days, measuring their testicular weight, sperm parameters, and oxidative stress markers.
  • Results showed that higher doses of Vitamin C improved fertility outcomes, increased antioxidant enzyme levels, and protected testicular structure from FLX damage, indicating its potential as a treatment for drug-induced fertility issues.
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In sub-Saharan Africa, children with severe malnutrition (SM) and HIV have substantially worse outcomes than children with SM alone, facing higher mortality risk and impaired nutritional recovery post-hospitalisation. Biological mechanisms underpinning this risk remain incompletely understood. This case-control study nested within the CHAIN cohort in Kenya, Uganda, Malawi, and Burkina Faso examined effect of HIV on six months post-discharge growth among children with SM and those at risk of malnutrition, assessed proteomic signatures associated with HIV in these children, and investigated how these systemic processes impact post-discharge growth in children with SM.

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Application of a Sensitive Capture Sequencing Approach to Reservoir Surveillance Detects Novel Viruses in Zambian Wild Rodents.

Viruses

November 2024

Global Alliance for Preventing Pandemics at the Center for Infection and Immunity, Mailman School of Public Health, Columbia University, New York, NY 10032, USA.

Article Synopsis
  • * Our findings identified new or previously unclassified viruses, including murine adenovirus 4 and two new species from the paramyxovirus and picornavirus families.
  • * The study highlights rodents as significant carriers for potential zoonotic viruses, which could pose risks to human health in the future.
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Article Synopsis
  • * A study of 35 soybean genotypes revealed moderate genetic diversity, grouping them into four clusters based on agro-morphological traits and SNP marker data.
  • * Key traits influencing yield, like flowering days and grain yield, offer insight for enhancing soybean genetic improvement efforts.
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  • A study was conducted to explore the fermentation process of certain leaves and its impact on crayfish in terms of growth and health benefits.
  • It was found that optimizing fermentation conditions led to improved nutritional content, like increased proteins and antioxidants, while reducing harmful substances.
  • The group receiving a specific concentration of fermented leaves (1FMO) showed the best growth and gut health, including enhanced enzyme activities and better intestinal microbiome balance compared to the control group.
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The Kullback-Leibler divergence (KL divergence) is a statistical measure that quantifies the difference between two probability distributions. Specifically, it assesses the amount of information that is lost when one distribution is used to approximate another. This concept is crucial in various fields, including information theory, statistics, and machine learning, as it helps in understanding how well a model represents the underlying data.

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Since 2015, the Zambia National Malaria Elimination Centre has conducted routine data quality audits in Central, Southern, and Western provinces, but trends in data reporting accuracy have not been examined. Routine data quality audit data collected at health facilities reporting into the monthly health management information system (HMIS) and weekly malaria rapid reporting system (MRRS) were used to measure data reporting accuracy trends from 2015 to 2022 and potential influencing factors using three data elements: outpatient department attendance and rapid diagnostic test (RDT)-tested cases for HMIS and MRRS, total confirmed cases for HMIS only, and RDT-positive cases for MRRS only. Reporting accuracies for HMIS and MRRS data elements and the percentage of facilities reporting with high accuracy (≥85%) improved over this period.

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West Nile virus (WNV) is a mosquito-borne flavivirus that causes encephalitis in humans and infects crocodiles, resulting in rashes and neurological signs. In Zambia, two distinct lineages of WNV have been detected in neighbouring areas: lineage 2 in mosquitoes and lineage 1a in farmed crocodiles. Considering the risk of direct or vector-mediated WNV transmission from crocodiles to mammals, it is necessary to elucidate the pathogenicity of WNV strains derived from crocodiles.

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Diabetes mellitus is a major public health concern in Bangladesh. The pattern of diabetic care and control of blood sugar among diabetic patients are not well described. We assessed the pattern of diabetic care among ambulatory diabetic patients attending tertiary care hospitals in Bangladesh, and explored the relationship of glycemic control with behavioral and metabolic risks.

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Immunochromatographic Lateral Flow Assays to Detect Filovirus Nucleoproteins.

Methods Mol Biol

November 2024

Division of Global Epidemiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan.

The recent large outbreaks of Ebola virus disease in West Africa and the Democratic Republic of the Congo have highlighted the need for rapid diagnostic tests to control this disease. In this chapter, the development of immunochromatographic lateral flow assays to detect filovirus nucleoproteins is described as an example of designing rapid diagnostic tests.

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Background: Diagnostic delays for tuberculosis are common, with high resultant mortality. Urine-Xpert Ultra (Cepheid) could improve time to diagnosis of tuberculosis disease and rifampicin resistance. We previously reported on lot-to-lot variation of the Fujifilm SILVAMP TB LAM.

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Background: Rodent-borne orthohantaviruses are the causative agents of hemorrhagic fever with renal syndrome and hantavirus pulmonary syndrome. Apart from the classic rodent-borne hantaviruses, numerous species of hantaviruses have been identified in shrews and bats; however, their antigenicity and pathogenicity are unknown. This study focused on developing a serological method to detect antibodies against bat- and shrew-borne hantaviruses.

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Contextual factors impacting WHO Framework Convention on Tobacco Control implementation in Africa-a scoping review.

Health Promot Int

December 2024

School of Physical and Occupational Therapy, McGill University, 3630 prom. Sir-William-Osler Montreal, Quebec H3G 1Y5 or Tiohtià:ke, Canada.

According to the World Health Organization (WHO), tobacco use causes over 8 million deaths annually including 1.3 million due to second-hand exposure. Furthermore, data from the Tobacco Atlas show that the tobacco industry continues to target new markets in the WHO African region, one of two regions where absolute numbers of smokers continue to increase.

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Background: There is persistent pressure on countries with a high burden of HIV infection to reach desired targets for HIV treatment outcomes. This has led to moving from the "one-size-fits-all" model to differentiated service delivery (DSD) models, which are meant to be more patient-centered and efficient but without compromising on the quality of patient care. However, for DSD models to be efficient, facilities should have indicators of HIV services available and ready to provide the DSD models.

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