Africa South of the Sahara

撒哈拉以南非洲
  • 文章类型: Journal Article
    背景:世界上每年有一半的儿童遭受暴力,但是暴力的含义并不普遍。因此,我们可能有无法衡量的风险,和地址,对儿童和青少年最重要的行为。在本文中,我们描述并综合了撒哈拉以南非洲儿童和青少年如何将不同行为行为概念化的证据,这些行为在世卫组织和联合国儿童权利委员会的定义下被视为儿童暴力.
    结果:我们对定性研究进行了系统评价。我们搜索了心理信息,CINAHL,Embase,全球卫生,Medline和ERIC适用于2023年3月之前发布的所有出版物。30篇论文符合纳入标准。我们综合了儿童和青少年的主要数据,并借鉴了纳入研究的作者的理论和背景解释。在45个以上的撒哈拉以南非洲国家中,只有12个国家参加了相关研究。在包括的30篇论文中,25来自三个国家:南非,乌干达和加纳。30篇论文中只有10篇报道了幼儿(青春期前)的数据,30篇论文中有18篇主要关注性暴力。14项研究使用了儿童友好和/或参与式方法。从这有限的证据来看,我们确定了六个总体主题,即儿童和青少年如何将他们对国际公认的暴力行为的经历概念化:1)成年人滥用或忽视责任;2)来自同龄人的性暴力,家庭和社区成员;3)已建立的亲密关系中的暴力;4)同龄人和社区成员围绕性行为的情感暴力;5)同龄人之间的战斗和殴打;6)街头和社区危险。没有符合我们纳入标准的研究专门审查了儿童或青少年对同性恋或跨性别暴力的概念;对残疾儿童的暴力行为;男孩遭受男性犯罪者的性暴力;贩运,现代奴役或冲突;童工;或切割女性生殖器官。我们发现,三个维度在儿童和青少年如何构建暴力概念方面很重要:他们的年龄,与犯罪者的关系,以及他们所经历的行为的物理位置。这些维度是相互关联和性别区分的。
    结论:当前有限的证据基础表明,儿童和青少年对暴力的概念化与,但也不同于,世卫组织和UNCRC对暴力的定义。目前,国际调查工具侧重于衡量特定行为的类型和频率,而忽视了儿童对这些行为的理解。与犯罪者的关系,孩子的年龄,物理位置对于儿童如何概念化他们在国际上公认的暴力行为的经历都很重要,因此对他们的健康和社会结果可能很重要。在开发用于测试的项目时,这些开发措施应考虑这些尺寸。
    BACKGROUND: Half of the world\'s children experience violence every year, but the meaning of violence is not universally agreed. We may therefore risk failing to measure, and address, the acts that matter most to children and adolescents. In this paper, we describe and synthesise evidence on how children and adolescents in sub-Saharan Africa conceptualise different behavioural acts which are deemed violence in childhood under WHO and UN CRC definitions.
    RESULTS: We conducted a systematic review of qualitative studies. We searched PsychINFO, CINAHL, Embase, Global Health, Medline and ERIC for all publications released prior to March 2023. 30 papers met inclusion criteria. We synthesised primary data from children and adolescents and drew upon theoretical and contextual interpretations of authors of included studies. Only 12 of more than 45 sub-Saharan African countries were represented with relevant research. Of the 30 included papers, 25 came from three countries: South Africa, Uganda and Ghana. Only 10 of 30 papers reported data from young children (pre-adolescence), and 18 of 30 papers primarily focused on sexual violence. 14 studies used child friendly and/or participatory methods. From this limited evidence, we identified six overarching themes in how children and adolescents conceptualised their experiences of acts internationally recognised as violence: 1) adults abusing or neglecting responsibility; 2) sexual violence from peers, family and community members; 3) violence in established intimate relationships; 4) emotional violence surrounding sex from peers and community members; 5) fighting and beating between peers; 6) street and community dangers. No studies meeting our inclusion criteria specifically examined children or adolescents\' conceptualisations of homophobic or transphobic violence; violence against children with disabilities; boys\' experiences of sexual violence from male perpetrators; trafficking, modern slavery or conflict; child labour; or female genital mutilation. We found that three dimensions were important in how children and adolescents constructed conceptualisations of violence: their age, relationship to the perpetrator, and the physical location of acts they had experienced. These dimensions were interrelated and gendered.
    CONCLUSIONS: The current limited evidence base suggests children and adolescents\' conceptualisations of violence overlapped with, but were also distinct from, the WHO and UNCRC definitions of violence. Currently international survey tools focus on measuring types and frequencies of particular acts and neglect to focus on children\'s understandings of those acts. Relationship to perpetrator, age of child, physical location are all important in how children conceptualise their experiences of acts internationally recognised as violence, and therefore might be important for their health and social outcomes. Those developing measures should account for these dimensions when developing items for testing.
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  • 文章类型: Journal Article
    背景:在12周龄之前感染HIV的婴儿开始抗逆转录病毒治疗(ART)可以将死亡风险降低75%。即时护理(POC)诊断测试对于及时启动ART至关重要;但是,尽管它的可用性,在12周龄之前,ART起始率仍然相对较低。这项系统评价描述了12周龄前婴儿开始ART的障碍,尽管有POC。
    方法:本系统综述使用叙述性综合方法。我们使用搜索策略搜索PubMed和Scopus,这些策略结合了关键词“婴儿早期开始接受抗逆转录病毒治疗”的多个变体,“障碍”和“撒哈拉以南非洲”(初始搜索2023年1月18日;最终搜索2023年8月1日)。我们包括定性,观察性和混合方法研究报告了婴儿早期开始对ART的影响。我们排除了报道对预防母婴传播级联的其他组成部分有影响的研究。使用以更新的实施研究综合框架为指导的演绎方法,我们围绕婴儿早期开始接受ART的障碍制定了描述性代码和主题。然后,我们使用该行动为已识别的障碍制定了干预建议,演员,代码中的目标和时间框架。
    结果:在所审查的266篇摘要中,审查了52篇全文论文,其中包括12篇论文。南非的论文大多来自一个国家(n=3),报道最多的研究设计是回顾性的(n=6)。在0-12个月的婴儿中,超过12周的ART开始延迟主要与医疗机构和母亲因素有关。确定的最突出的障碍是POC测试资源不足(包括人力资源、实验室设施和患者随访)。产妇相关因素,如有限的男性参与和母亲对治疗和护理的看法,也有影响力。
    结论:我们确定了卫生系统启动ART的结构性障碍,社会和文化层面。改进了POC测试作业的资源及时分配,加上解决母亲和医疗保健提供者之间社会和行为障碍的干预措施,承诺加强婴儿及时启动ART。
    结论:本文确定了婴儿及时启动ART的障碍并提出了策略。
    BACKGROUND: Antiretroviral therapy (ART) initiation in infants living with HIV before 12 weeks of age can reduce the risk of mortality by 75%. Point-of-care (POC) diagnostic testing is critical for prompt ART initiation; however, despite its availability, rates of ART initiation are still relatively low before 12 weeks of age. This systematic review describes the barriers to ART initiation in infants before 12 weeks of age, despite the availability of POC.
    METHODS: This systematic review used a narrative synthesis methodology. We searched PubMed and Scopus using search strategies that combined terms of multiple variants of the keywords \"early infant initiation on antiretroviral therapy,\" \"barriers\" and \"sub-Saharan Africa\" (initial search 18th January 2023; final search 1st August 2023). We included qualitative, observational and mixed methods studies that reported the influences of early infant initiation on ART. We excluded studies that reported influences on other components of the Prevention of Mother to Child Transmission cascade. Using a deductive approach guided by the updated Consolidated Framework of Implementation Research, we developed descriptive codes and themes around barriers to early infant initiation on ART. We then developed recommendations for interventions for the identified barriers using the action, actor, target and time framework from the codes.
    RESULTS: Of the 266 abstracts reviewed, 52 full-text papers were examined, of which 12 papers were included. South Africa had most papers from a single country (n = 3) and the most reported study design was retrospective (n = 6). Delays in ART initiation beyond 12 weeks in infants 0-12 months were primarily associated with health facility and maternal factors. The most prominent barriers identified were inadequate resources for POC testing (including human resources, laboratory facilities and patient follow-up). Maternal-related factors, such as limited male involvement and maternal perceptions of treatment and care, were also influential.
    CONCLUSIONS: We identified structural barriers to ART initiation at the health system, social and cultural levels. Improvements in the timely allocation of resources for POC testing operations, coupled with interventions addressing social and behavioural barriers among both mothers and healthcare providers, hold a promise for enhancing timely ART initiation in infants.
    CONCLUSIONS: This paper identifies barriers and proposes strategies for timely ART initiation in infants.
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  • 文章类型: Journal Article
    全球范围内,在庆祝五岁生日之前,有490万五岁以下儿童死亡。在撒哈拉以南非洲和南亚,五分之四的五岁以下儿童死亡。儿童腹泻是导致死亡的主要原因之一,每年造成约443,832名儿童死亡。尽管儿童腹泻的医疗保健利用对降低儿童死亡率和发病率有显著影响,大多数儿童死于寻求医疗保健的延误。因此,本研究旨在评估5岁以下儿童死亡率最高的国家对儿童腹泻的医疗保健利用情况.这项研究使用了2013/14年至2019年人口和健康调查的次要数据,调查了4个五岁以下死亡率最高的国家。包括7254名五岁以下儿童的母亲的加权样本。采用多水平二元逻辑回归来确定儿童腹泻医疗保健利用的相关因素。在小于0.05的p值以95%置信区间声明统计显著性。在五岁以下儿童死亡率最高的国家中,儿童腹泻的医疗保健利用率总体为58.40%(95%CI57.26%,59.53%)。伴侣/丈夫的教育状况,家庭财富指数,媒体曝光,关于口服补液的信息,在5岁以下儿童死亡率最高的国家,分娩地点和分娩地点均为阳性,而存活儿童数量是儿童腹泻医疗服务利用的阴性预测因素.此外,与几内亚相比,生活在不同国家也是儿童腹泻医疗保健利用的相关因素.在五岁以下死亡率最高的国家,十分之四以上的儿童没有接受儿童腹泻的医疗保健。因此,为了增加儿童腹泻的医疗保健利用率,卫生管理人员和政策制定者应制定战略,以改善家庭财富指数较差的家庭财富状况。决策者和计划规划者还应致力于媒体曝光并增加受教育的机会。其他研究人员也应考虑进一步的研究,包括对疾病的严重程度和对儿童腹泻的医疗保健利用的ORS知识相关因素。
    Globally, 4.9 million under-five deaths occurred before celebrating their fifth birthday. Four in five under-five deaths were recorded in sub-Saharan Africa and Southern Asia. Childhood diarrhea is one of the leading causes of death and is accountable for killing around 443,832 children every year. Despite healthcare utilization for childhood diarrhea has a significant effect on the reduction of childhood mortality and morbidity, most children die due to delays in seeking healthcare. Therefore, this study aimed to assess healthcare utilization for childhood diarrhea in the top high under-five mortality countries. This study used secondary data from 2013/14 to 2019 demographic and health surveys of 4 top high under-five mortality countries. A total weighted sample of 7254 mothers of under-five children was included. A multilevel binary logistic regression was employed to identify the associated factors of healthcare utilization for childhood diarrhea. The statistical significance was declared at a p-value less than 0.05 with a 95% confidence interval. The overall magnitude of healthcare utilization for childhood diarrhea in the top high under-five mortality countries was 58.40% (95% CI 57.26%, 59.53%). Partner/husband educational status, household wealth index, media exposure, information about oral rehydration, and place of delivery were the positive while the number of living children were the negative predictors of healthcare utilization for childhood diarrhea in top high under-five mortality countries. Besides, living in different countries compared to Guinea was also an associated factor for healthcare utilization for childhood diarrhea. More than four in ten children didn\'t receive health care for childhood diarrhea in top high under-five mortality countries. Thus, to increase healthcare utilization for childhood diarrhea, health managers and policymakers should develop strategies to improve the household wealth status for those with poor household wealth index. The decision-makers and program planners should also work on media exposure and increase access to education. Further research including the perceived severity of illness and ORS knowledge-related factors of healthcare utilization for childhood diarrhea should also be considered by other researchers.
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  • 文章类型: Journal Article
    急性呼吸道感染(ARIs)是全球5岁以下儿童死亡的主要原因。孕产妇寻求医疗保健的行为可能有助于将与ARI相关的死亡率降至最低,因为他们决定为子女提供医疗保健服务的种类和频率。因此,本研究旨在使用机器学习模型预测撒哈拉以南非洲(SSA)5岁以下儿童中缺乏孕产妇寻求医疗保健行为,并确定其相关因素.
    撒哈拉以南非洲国家的人口健康调查是数据集的来源。在这项研究中,我们使用了16832名五岁以下儿童的加权样本。使用Python(3.9版)处理数据,和机器学习模型,如极端梯度提升(XGB),随机森林,决策树,逻辑回归,并应用了朴素贝叶斯。在这项研究中,我们使用了评估指标,包括AUCROC曲线,准确度,精度,召回,和F测量,评估预测模型的性能。
    在这项研究中,在最终分析中使用了16,832名5岁以下儿童的加权样本.在提出的机器学习模型中,随机森林(RF)是预测最好的模型,准确率为88.89%,精度为89.5%,83%的F度量,AUCROC曲线为95.8%,77.6%的召回率预测母亲没有为ARIs寻求医疗保健的行为。与其他提出的模型相比,朴素贝叶斯的准确性最低(66.41%)。没有媒体曝光,生活在农村地区,不是母乳喂养,贫穷的财富地位,送货上门,没有ANC访问,没有母亲教育,35-49岁的母亲年龄组,与医疗机构的距离是母亲缺乏ARIs寻求医疗保健行为的重要预测因素。另一方面,营养不良的儿童,体重不足,浪费地位,腹泻,出生尺寸,已婚妇女,作为一个男性或女性的孩子,在5岁以下儿童中,有产妇职业与良好的产妇寻求ARIs的行为显著相关。
    RF模型提供了更大的预测能力,可以根据ARI风险因素估算母亲的寻求医疗保健行为。机器学习可以帮助高危ARI儿童实现早期预测和干预。这导致建议制定政策方向,以降低撒哈拉以南国家因ARI而导致的儿童死亡率。
    UNASSIGNED: Acute respiratory infections (ARIs) are the leading cause of death in children under the age of 5 globally. Maternal healthcare-seeking behavior may help minimize mortality associated with ARIs since they make decisions about the kind and frequency of healthcare services for their children. Therefore, this study aimed to predict the absence of maternal healthcare-seeking behavior and identify its associated factors among children under the age 5 in sub-Saharan Africa (SSA) using machine learning models.
    UNASSIGNED: The sub-Saharan African countries\' demographic health survey was the source of the dataset. We used a weighted sample of 16,832 under-five children in this study. The data were processed using Python (version 3.9), and machine learning models such as extreme gradient boosting (XGB), random forest, decision tree, logistic regression, and Naïve Bayes were applied. In this study, we used evaluation metrics, including the AUC ROC curve, accuracy, precision, recall, and F-measure, to assess the performance of the predictive models.
    UNASSIGNED: In this study, a weighted sample of 16,832 under-five children was used in the final analysis. Among the proposed machine learning models, the random forest (RF) was the best-predicted model with an accuracy of 88.89%, a precision of 89.5%, an F-measure of 83%, an AUC ROC curve of 95.8%, and a recall of 77.6% in predicting the absence of mothers\' healthcare-seeking behavior for ARIs. The accuracy for Naïve Bayes was the lowest (66.41%) when compared to other proposed models. No media exposure, living in rural areas, not breastfeeding, poor wealth status, home delivery, no ANC visit, no maternal education, mothers\' age group of 35-49 years, and distance to health facilities were significant predictors for the absence of mothers\' healthcare-seeking behaviors for ARIs. On the other hand, undernourished children with stunting, underweight, and wasting status, diarrhea, birth size, married women, being a male or female sex child, and having a maternal occupation were significantly associated with good maternal healthcare-seeking behaviors for ARIs among under-five children.
    UNASSIGNED: The RF model provides greater predictive power for estimating mothers\' healthcare-seeking behaviors based on ARI risk factors. Machine learning could help achieve early prediction and intervention in children with high-risk ARIs. This leads to a recommendation for policy direction to reduce child mortality due to ARIs in sub-Saharan countries.
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  • 文章类型: Journal Article
    背景:子宫肌瘤是在育龄期妇女中发现的最常见的盆腔良性肿瘤,到更年期可能影响所有妇女的70%。子宫肌瘤给妇女和社会带来沉重负担,导致生活质量低下,自我形象受损,和受损的社会,性,情感,以及受影响个体的身体健康。
    目的:本研究旨在绘制撒哈拉以南非洲子宫肌瘤负担的证据;子宫肌瘤地理负担,诊断为子宫肌瘤的妇女的子宫肌瘤费用估算和报告经验。
    方法:文章将从撒哈拉以南非洲国家中选择。
    方法:此范围审查将由Arksey&O\'Malley框架指导,由Levac等人(2010)增强。将搜索以下电子数据库;PubMed,EBSCOhost(护理和相关健康文献和健康来源的累积指数),医学文献在线分析与检索系统,科克伦图书馆,Scopus,WebofScience,非洲在线杂志,谷歌学者。将使用人口概念和背景(PCC)框架,PRISMA流程图也将用于显示文献检索和研究选择。将使用描述性数据分析;结果将以主题形式呈现,叙述摘要,tables,和图表。
    结论:该研究预计会发现有关子宫肌瘤分布的相关文献,子宫肌瘤在地理分布方面的负担,年龄分布,和与疾病相关的成本逼近。这将有助于确定研究差距,以指导未来的研究为科学知识体系做出贡献,并制定该疾病的预防策略。
    BACKGROUND: Uterine fibroids are the most common pelvic benign tumours found in reproductive-aged women and may affect up to 70% of all women by menopause. Uterine fibroids place a heavy burden on women and society resulting in poor quality of life, impaired self-image, and impaired social, sexual, emotional, and physical well-being of affected individuals.
    OBJECTIVE: This study aims to map the evidence on the burden of uterine fibroids in Sub-Saharan Africa; uterine fibroids\' burden by age, uterine fibroids\' geographic burden, uterine fibroids\' cost estimation and reported experiences among women diagnosed with uterine fibroids.
    METHODS: Articles will be selected from countries within Sub-Saharan Africa.
    METHODS: This scoping review will be guided by the Arksey & O\'Malley framework, enhanced by Levac et al (2010). The following electronic databases will be searched; PubMed, EBSCOhost (Cumulated Index to Nursing and Allied Health Literature and Health Source), Medical Literature Analysis and Retrieval System Online, Cochrane Library, Scopus, Web of Science, Africa Journal Online, and Google Scholar. The Population Concept and Context (PCC) framework will be used and the PRISMA flow diagram will also be used to show the literature search and selection of studies. Descriptive data analysis will be used; results will be presented in themes, narrative summaries, tables, and charts.
    CONCLUSIONS: The study anticipates finding relevant literature on the distribution of uterine fibroids, the burden of uterine fibroids in terms of geographic distribution, age distribution, and cost approximation related to the disease. This will assist in identifying research gaps to guide future research contribute to the body of scientific knowledge and develop preventative strategies for the disease.
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  • 文章类型: Journal Article
    目的:了解三个低收入和中等收入国家的受伤患者在获得和接受优质伤害护理方面的共性和差异。
    方法:定性访谈研究。采访都有录音,转录和主题分析。
    方法:加纳的城乡环境,南非和卢旺达。
    方法:59例肌肉骨骼损伤患者。
    结果:我们发现了五种常见的障碍和六种常见的促进者,这些障碍是受伤患者获得和接受高质量伤害护理的经验。障碍包括服务和治疗可用性等问题,交通挑战,冷漠的护理,个人财政短缺和医疗保险覆盖面不足,除了低健康素养和信息提供。促进者包括有效的信息提供和知情同意做法,获得健康保险,提高健康素养,同情和反应灵敏的护理,综合多学科管理和出院计划,以及非正式和正式的交通选择,包括救护车服务。这些障碍和促进者在至少两个国家中普遍存在并共享,但在主题频率上显示出国家间和国家内部(城市化和乡村之间)的差异。
    结论:有影响患者获得和接受护理的普遍因素,独立于环境或医疗保健系统。重要的是要认识和理解这些障碍和促进者,以告知政策决定并制定可转让的干预措施,旨在提高撒哈拉以南非洲国家的伤害护理质量。
    OBJECTIVE: To understand commonalities and differences in injured patient experiences of accessing and receiving quality injury care across three lower-income and middle-income countries.
    METHODS: A qualitative interview study. The interviews were audiorecorded, transcribed and thematically analysed.
    METHODS: Urban and rural settings in Ghana, South Africa and Rwanda.
    METHODS: 59 patients with musculoskeletal injuries.
    RESULTS: We found five common barriers and six common facilitators to injured patient experiences of accessing and receiving high-quality injury care. The barriers encompassed issues such as service and treatment availability, transportation challenges, apathetic care, individual financial scarcity and inadequate health insurance coverage, alongside low health literacy and information provision. Facilitators included effective information giving and informed consent practices, access to health insurance, improved health literacy, empathetic and responsive care, comprehensive multidisciplinary management and discharge planning, as well as both informal and formal transportation options including ambulance services. These barriers and facilitators were prevalent and shared across at least two countries but demonstrated intercountry and intracountry (between urbanity and rurality) variation in thematic frequency.
    CONCLUSIONS: There are universal factors influencing patient experiences of accessing and receiving care, independent of the context or healthcare system. It is important to recognise and understand these barriers and facilitators to inform policy decisions and develop transferable interventions aimed at enhancing the quality of injury care in sub-Saharan African nations.
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  • 文章类型: Systematic Review
    由于危险的工作条件,在焊接过程中,焊工更有可能接触到轻度到严重的眼部问题。全球范围内,这个问题是视力丧失和失明的主要原因。全球单侧失明的最常见原因之一是眼外伤。
    本综述旨在评估撒哈拉以南非洲焊工中眼部保护实践和相关因素的综合患病率。
    包括PubMed、Scopus,科学网,谷歌学者,和非洲在线期刊进行了相关文献的系统搜索。使用STATA数据分析软件版本14进行统计分析,而MicrosoftExcel用于数据抽象。我们使用漏斗图以及Egger和Begg回归测试检查了发布偏差。p值<0.05被认为是显著的,表明存在发表偏倚。I2统计量用于评估研究之间的异质性。使用随机效应模型评估研究的总体效果。
    从检索到的2,326项原始研究中,17项研究被纳入最终的汇总患病率分析。在撒哈拉以南非洲的小型焊工中,眼部保护实践的总体患病率为53.71%(95%CI:42.54,64.88)。接受岗前和在职培训[AOR:4.97,95%CI:(2.64,9.36)],具有焊工工作经验[AOR:4.94,95%CI:(3.24,7.54)],并且有眼外伤史[AOR:2.99,95%CI:(1.58,5.66)]与眼部保护措施显著相关.
    在撒哈拉以南非洲国家,小型焊工的眼部防护措施较低。此外,当前的荟萃分析发现,眼部保护实践与在职培训显着相关,焊工工作经验,以及撒哈拉以南非洲小型焊工过去一年的眼外伤史。这篇综述将作为进一步研究的基线数据,为眼部护理提供者和政策制定者提供投入,以提高眼部保护的良好实践水平。应制定政策,确保所有焊工使用适当的个人防护设备,并定期接受健康培训。
    UNASSIGNED: Due to hazardous working conditions, welders are more likely to be exposed to mild to severe eye issues during the welding process. Globally, this issue is a major contributor to vision loss and blindness. One of the most frequent causes of unilateral blindness in the globe is ocular injury.
    UNASSIGNED: This review aimed to assess the pooled prevalence of ocular protection practice and associated factors among welders in sub-Saharan Africa.
    UNASSIGNED: Databases including PubMed, Scopus, web of Science, Google Scholar, and the African Journals Online were systematically searched for relevant literature. The statistical analysis was performed using STATA data analysis software version 14, while Microsoft Excel was used for data abstraction. We checked publication bias using a funnel plot and Egger and Begg regression tests. A p-value < 0.05 was considered significant, suggesting the presence of presence publication bias. The I2 statistics were used to assess heterogeneity between studies. The study\'s overall effect was evaluated using the random effects model.
    UNASSIGNED: From retrieved 2,326 original studies, 17 studies were included in the final pooled prevalence analysis. The overall prevalence of ocular protection practice among small-scale welders in sub-Saharan Africa was 53.71% (95% CI: 42.54, 64.88). Having pre and in-service training [AOR: 4.97, 95% CI: (2.64, 9.36)], having work experience as a welder [AOR: 4.94, 95% CI: (3.24, 7.54)], and having a history of ocular injury [AOR: 2.99, 95% CI: (1.58, 5.66)] were significantly associated with the ocular protection practices.
    UNASSIGNED: In sub-Saharan African countries, the ocular protection practices among small-scale welders were low. Furthermore, the current meta-analysis found ocular protection practice to be significantly associated with on-the-job training, work experience of welders, and a history of ocular injury in the past year of small-scale welders in sub-Saharan Africa. This review will serve as baseline data for further studies to generate inputs for eye care providers and policymakers to improve good practice levels about ocular protection. Policies should be put in place to ensure all welders use proper personal-protective equipment, and receive regular health training.
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  • 文章类型: Journal Article
    非洲水牛(Synceruscaffer)是一种野生牛,在撒哈拉以南非洲大部分地区都有历史分布。基因组分析可以提供对物种进化史的见解,以及塑造人口的关键选择压力,包括对人口水平差异的评估,种群碎片化,和种群遗传结构。在这项研究中,我们产生了最高质量的从头基因组组装(2.65Gb,迄今为止,非洲水牛的脚手架N5069.17Mb),并对整个物种分布的195个基因组进行了测序。主要成分和混合物分析对目前描述的四个亚种几乎没有支持。估算有效迁移表面分析表明,地理障碍在塑造基因流和种群结构方面发挥了重要作用。估计有效人口规模表明,5-10,000年前所有人口都出现了大幅下降,与人口增长相吻合。最后,选择的特征被丰富了与免疫反应相关的关键基因,表明传染病对非洲水牛施加了巨大的选择性压力。这些发现对理解牛体进化具有重要意义,水牛保护和种群管理。
    The African buffalo (Syncerus caffer) is a wild bovid with a historical distribution across much of sub-Saharan Africa. Genomic analysis can provide insights into the evolutionary history of the species, and the key selective pressures shaping populations, including assessment of population level differentiation, population fragmentation, and population genetic structure. In this study we generated the highest quality de novo genome assembly (2.65 Gb, scaffold N50 69.17 Mb) of African buffalo to date, and sequenced a further 195 genomes from across the species distribution. Principal component and admixture analyses provided little support for the currently described four subspecies. Estimating Effective Migration Surfaces analysis suggested that geographical barriers have played a significant role in shaping gene flow and the population structure. Estimated effective population sizes indicated a substantial drop occurring in all populations 5-10,000 years ago, coinciding with the increase in human populations. Finally, signatures of selection were enriched for key genes associated with the immune response, suggesting infectious disease exert a substantial selective pressure upon the African buffalo. These findings have important implications for understanding bovid evolution, buffalo conservation and population management.
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  • 文章类型: Journal Article
    暴露于高和低环境温度会增加新生儿死亡的风险,但是气候变化对与温度相关的新生儿死亡的影响尚不清楚。我们使用来自29个低收入和中等收入国家的人口与健康调查(DHS)数据(n=40,073)来估算2001年至2019年间因气候变化造成的与温度相关的新生儿死亡负担。我们发现在所有国家,4.3%的新生儿死亡与非最佳温度有关。气候变化导致32%(范围:19-79%)与热有关的新生儿死亡,同时将各自的感冒相关负担减少30%(范围:10-63%)。气候变化影响了所有研究国家与温度相关的新生儿死亡,在撒哈拉以南非洲国家中,气候引起的热量增加和寒冷减少带来的损失最为明显。未来全球平均气温的上升预计将加剧与热有关的负担,这要求采取雄心勃勃的缓解和适应措施,以保护新生儿的健康。
    Exposure to high and low ambient temperatures increases the risk of neonatal mortality, but the contribution of climate change to temperature-related neonatal deaths is unknown. We use Demographic and Health Survey (DHS) data (n = 40,073) from 29 low- and middle-income countries to estimate the temperature-related burden of neonatal deaths between 2001 and 2019 that is attributable to climate change. We find that across all countries, 4.3% of neonatal deaths were associated with non-optimal temperatures. Climate change was responsible for 32% (range: 19-79%) of heat-related neonatal deaths, while reducing the respective cold-related burden by 30% (range: 10-63%). Climate change has impacted temperature-related neonatal deaths in all study countries, with most pronounced climate-induced losses from increased heat and gains from decreased cold observed in countries in sub-Saharan Africa. Future increases in global mean temperatures are expected to exacerbate the heat-related burden, which calls for ambitious mitigation and adaptation measures to safeguard the health of newborns.
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  • 文章类型: Case Reports
    先天性心室动脉瘤(CVA)是罕见的心脏异常,主要在黑人人群中有所描述。它们的特征是通常位于基底和顶端段的运动异常的心室突出。尽管诊断通常是偶然的,并且大多数患者无症状,危及生命的事件,如持续性室性心律失常,CVA破裂,心力衰竭并不少见。然而,目前尚无标准化治疗,保守治疗和手术治疗均有良好的结局.我们报告了两名年轻的非洲黑人患者的病例,这些患者有巨大的症状性CVA病变,他们通过心室修复技术成功进行了手术修复。2例均因胸痛和呼吸困难而接受咨询。胸部X线及经胸多普勒超声心动图提示诊断。胸部血管造影和胸部磁共振成像证实了诊断。两名患者均接受了成功的手术。本病例报告旨在重新审视这种罕见病理的诊断和治疗方法。在我们的专业环境中。
    Congenital ventricular aneurysms (CVA) are rare cardiac anomalies that have been predominantly described in the Black population. They are characterized by an akinetic ventricular protrusion that is commonly located at the basal and apical segments. Although the diagnosis is often incidental and the majority of patients are asymptomatic, life-threatening events such as persistent ventricular arrhythmias, CVA rupture, and heart failure are not uncommon. However, no standardized therapy is currently available and good outcomes have been reported with both conservative and surgical management. We report the cases of two young Black African patients with huge symptomatic CVA lesions who underwent successful surgical repair with a ventricular restoration technique. Both cases were consulted for chest pain and dyspnea. Chest X-ray and transthoracic Doppler echocardiography suggested the diagnosis. Thoracic angioscanner and thoracic magnetic resonance imaging confirmed the diagnosis. Both patients underwent successful surgery. This case report aims to revisit the diagnostic and therapeutic approach to this rare pathology, in our professional environment.
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