scholarly journals Challenges and Progress with Diagnosing Pulmonary Tuberculosis in Low- and Middle-Income Countries

Diagnostics ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 78 ◽  
Author(s):  
Anthony Harries ◽  
Ajay Kumar
Keyword(s):  
World Health ◽  
Molecular Diagnostic ◽  
Diagnostic Tools ◽  
Sputum Smear ◽  
Smear Microscopy ◽  
Molecular Diagnostic Techniques ◽  
Tuberculin Skin Testing ◽  
Middle Income ◽  
Middle Income Countries ◽  
Low And Middle Income

Case finding and the diagnosis of tuberculosis (TB) are key activities to reach the World Health Organization’s End TB targets by 2030. This paper focuses on the diagnosis of pulmonary TB (PTB) in low- and middle-income countries. Sputum smear microscopy, despite its many limitations, remains the primary diagnostic tool in peripheral health facilities; however, this is being replaced by molecular diagnostic techniques, particularly Xpert MTB/RIF, which allows a bacteriologically confirmed diagnosis of TB along with information about whether or not the organism is resistant to rifampicin within two hours. Other useful diagnostic tools at peripheral facilities include chest radiography, urine lipoarabinomannan (TB-LAM) in HIV-infected patients with advanced immunodeficiency, and the loop-mediated isothermal amplification (TB-LAMP) test which may be superior to smear microscopy. National Reference Laboratories work at a higher level, largely performing culture and phenotypic drug susceptibility testing which is complemented by genotypic methods such as line probe assays for detecting resistance to isoniazid, rifampicin, and second-line drugs. Tuberculin skin testing, interferon gamma release assays, and commercial serological tests are not recommended for the diagnosis of active TB. Linking diagnosis to treatment and care is often poor, and this aspect of TB management needs far more attention than it currently receives.

scholarly journals An open-source molecular diagnostic platform approach for outbreak and epidemic preparedness

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Devy M. Emperador ◽  
Laura T. Mazzola ◽  
Cassandra Kelly-Cirino
Keyword(s):  
Open Source ◽  
Business Model ◽  
Diagnostic Tests ◽  
World Health ◽  
Molecular Diagnostic ◽  
Outbreak Response ◽  
Middle Income ◽  
Middle Income Countries ◽  
Health Organization ◽  
Low And Middle Income

Background: Diagnostic development for outbreak pathogens has typically followed a disease-specific reactive rather than proactive response. Given the diversity of outbreak pathogens, particularly those prioritised by the World Health Organization Research and Development Blueprint, a more flexible and proactive approach to epidemic preparedness is needed to expand access to critical molecular diagnostic tests in peripheral and resource-constrained deployment settings.Objective: New and more sustainable directives are needed to spur the development of high-quality products, particularly for epidemics more often found in low- and middle-income countries. To leverage and de-risk the development process, we present the benefits and challenges of an open-source business model for co-development of molecular diagnostic tests for decentralised settings.Methods: We identify key outbreak pathogens that are available only for testing in high infrastructure laboratories and compare in-country installed base platforms that could be leveraged for menu expansion. Key strengths and challenges for development are highlighted for both platform and assay developers, with discussion of how to leverage and de-risk the process through an open-source development model.Results: Depending on the specific partner strengths, options for partnership roles are presented. The proposed open-source business model addresses the particular challenges in the detection of outbreak- and epidemic-prone pathogens in low- and middle-income countries, reduces development and deployment risks to support outbreak response, strengthens diagnostic capacity and creates a viable market for product developers.Conclusion: We hope this model for a collaborative and open-source approach for molecular diagnostics serves to encourage stakeholders to consider co-development partnerships to improve outbreak preparedness and epidemic/pandemic response.

scholarly journals Tuberculosis and Non-Communicable Disease Multimorbidity: An Analysis of the World Health Survey in 48 Low- and Middle-Income Countries

2021 ◽  
Vol 18 (5) ◽  
pp. 2439
Author(s):  
Brendon Stubbs ◽  
Kamran Siddiqi ◽  
Helen Elsey ◽  
Najma Siddiqi ◽  
Ruimin Ma ◽  
...  
Keyword(s):  
Health Survey ◽  
Low Income ◽  
World Health ◽  
Low Income Countries ◽  
Multivariable Logistic Regression Analysis ◽  
World Health Survey ◽  
Middle Income ◽  
Middle Income Countries ◽  
The World ◽  
Low And Middle Income

Tuberculosis (TB) is a leading cause of mortality in low- and middle-income countries (LMICs). TB multimorbidity [TB and ≥1 non-communicable diseases (NCDs)] is common, but studies are sparse. Cross-sectional, community-based data including adults from 21 low-income countries and 27 middle-income countries were utilized from the World Health Survey. Associations between 9 NCDs and TB were assessed with multivariable logistic regression analysis. Years lived with disability (YLDs) were calculated using disability weights provided by the 2017 Global Burden of Disease Study. Eight out of 9 NCDs (all except visual impairment) were associated with TB (odds ratio (OR) ranging from 1.38–4.0). Prevalence of self-reported TB increased linearly with increasing numbers of NCDs. Compared to those with no NCDs, those who had 1, 2, 3, 4, and ≥5 NCDs had 2.61 (95% confidence interval (CI) = 2.14–3.22), 4.71 (95%CI = 3.67–6.11), 6.96 (95%CI = 4.95–9.87), 10.59 (95%CI = 7.10–15.80), and 19.89 (95%CI = 11.13–35.52) times higher odds for TB. Among those with TB, the most prevalent combinations of NCDs were angina and depression, followed by angina and arthritis. For people with TB, the YLDs were three times higher than in people without multimorbidity or TB, and a third of the YLDs were attributable to NCDs. Urgent research to understand, prevent and manage NCDs in people with TB in LMICs is needed.

scholarly journals Effectiveness of Breastfeeding Support Packages in Low- and Middle-Income Countries for Infants under Six Months: A Systematic Review

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 681
Author(s):  
Ritu Rana ◽  
Marie McGrath ◽  
Ekta Sharma ◽  
Paridhi Gupta ◽  
Marko Kerac
Keyword(s):  
At Risk ◽  
Severe Acute Malnutrition ◽  
Acute Malnutrition ◽  
World Health ◽  
Cochrane Library ◽  
Breastfeeding Support ◽  
Middle Income ◽  
Middle Income Countries ◽  
Breastfeeding Practices ◽  
Low And Middle Income

Small and nutritionally at-risk infants under six months, defined as those with wasting, underweight, or other forms of growth failure, are at high-risk of mortality and morbidity. The World Health Organisation 2013 guidelines on severe acute malnutrition highlight the need to effectively manage this vulnerable group, but programmatic challenges are widely reported. This review aims to inform future management strategies for small and nutritionally at-risk infants under six months in low- and middle-income countries (LMICs) by synthesising evidence on existing breastfeeding support packages for all infants under six months. We searched PubMed, CINAHL, Cochrane Library, EMBASE, and Global Health databases from inception to 18 July 2018. Intervention of interest were breastfeeding support packages. Studies reporting breastfeeding practices and/or caregivers’/healthcare staffs’ knowledge/skills/practices for infants under six months from LMICs were included. Study quality was assessed using NICE quality appraisal checklist for intervention studies. A narrative data synthesis using the Synthesis Without Meta-analysis (SWiM) reporting guideline was conducted and key features of successful programmes identified. Of 15,256 studies initially identified, 41 were eligible for inclusion. They were geographically diverse, representing 22 LMICs. Interventions were mainly targeted at mother–infant pairs and only 7% (n = 3) studies included at-risk infants. Studies were rated to be of good or adequate quality. Twenty studies focused on hospital-based interventions, another 20 on community-based and one study compared both. Among all interventions, breastfeeding counselling (n = 6) and education (n = 6) support packages showed the most positive effect on breastfeeding practices followed by breastfeeding training (n = 4), promotion (n = 4) and peer support (n = 3). Breastfeeding education support (n = 3) also improved caregivers’ knowledge/skills/practices. Identified breastfeeding support packages can serve as "primary prevention" interventions for all infants under six months in LMICs. For at-risk infants, these packages need to be adapted and formally tested in future studies. Future work should also examine impacts of breastfeeding support on anthropometry and morbidity outcomes. The review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO 2018 CRD42018102795).

scholarly journals The impact of COVID-19 on the care of people living with noncommunicable diseases in low- and middle-income countries: an online survey of physicians and pharmacists in nine countries

2021 ◽  
Vol 22 ◽  
Author(s):  
Chris Bullen ◽  
Jessica McCormack ◽  
Amanda Calder ◽  
Varsha Parag ◽  
Kannan Subramaniam ◽  
...  
Keyword(s):  
Public Health ◽  
Healthcare Workers ◽  
Online Survey ◽  
World Health ◽  
Noncommunicable Diseases ◽  
Middle Income ◽  
Middle Income Countries ◽  
Health Measures ◽  
The Impact ◽  
Low And Middle Income

Abstract Background: The global COVID-19 pandemic has disrupted healthcare worldwide. In low- and middle-income countries (LMICs), where people may have limited access to affordable quality care, the COVID-19 pandemic has the potential to have a particularly adverse impact on the health and healthcare of individuals with noncommunicable diseases (NCDs). A World Health Organization survey found that disruption of delivery of healthcare for NCDs was more significant in LMICs than in high-income countries. However, the study did not elicit insights into the day-to-day impacts of COVID-19 on healthcare by front-line healthcare workers (FLHCWs). Aim: To gain insights directly from FLHCWs working in countries with a high NCD burden, and thereby identify opportunities to improve the provision of healthcare during the current pandemic and in future healthcare emergencies. Methods: We recruited selected frontline healthcare workers (general practitioners, pharmacists, and other medical specialists) from nine countries to complete an online survey (n = 1347). Survey questions focused on the impact of COVID-19 pandemic on clinical practice and NCDs; barriers to clinical care during the pandemic; and innovative responses to the many challenges presented by the pandemic. Findings: The majority of FLHCWs responding to our survey reported that their care of patients had been impacted both adversely and positively by the public health measures imposed. Most FLHCs (95%) reported a deterioration in the mental health of their patients. Conclusions: Continuity of care for NCDs as part of pandemic preparedness is needed so that chronic conditions are not exacerbated by public health measures and the direct impacts of the pandemic.

scholarly journals Tobacco Control in Low- and Middle-Income Countries: Changing the Present to Help the Future

2018 ◽  
Vol 13 (4) ◽  
pp. 187-188 ◽  
Author(s):  
Bethany Hipple Walters ◽  
Ionela Petrea ◽  
Harry Lando
Keyword(s):  
World Health Organization ◽  
World Health ◽  
Second Hand Smoke ◽  
Vulnerable Children ◽  
Middle Income ◽  
Middle Income Countries ◽  
The Past ◽  
Second Hand Smoke Exposure ◽  
Health Organization ◽  
Low And Middle Income

While the global smoking rate has dropped in the past 30 years (from 41.2% of men in 1980 to 31.1% in 2012 and from 10.6% of women in 1980 to 6.2% in 2012), the number of tobacco smokers has increased due to population growth (Ng et al., 2014). This tobacco use and second-hand smoke exposure continue to harm people worldwide. Those harmed are often vulnerable: children, those living in low- and middle-income countries (LMICs), those with existing diseases, etc. As noted by the World Health Organization (WHO), nearly 80% of those who smoke live in a LMIC (World Health Organization, 2017). Furthermore, it is often those who are more socio-economically disadvantaged or less educated in LMICs that are exposed to second-hand smoke at home and work (Nazar, Lee, Arora, & Millett, 2015).

scholarly journals Implementation research training for learners in low- and middle-income countries: Evaluating behavior change after participating in a massive online open course

2020 ◽  
Author(s):  
Pascal Launois ◽  
Dermot Maher ◽  
Edith Certain ◽  
Bella Ross ◽  
Michael J. Penkunas
Keyword(s):  
Professional Practice ◽  
Implementation Research ◽  
Online Survey ◽  
Training Programs ◽  
Research Training ◽  
Critical Role ◽  
World Health ◽  
Middle Income ◽  
Middle Income Countries ◽  
Low And Middle Income

Abstract Background Implementation research (IR) can play a critical role in the delivery of disease control interventions, particularly in low- and middle-income countries (LMICs). The growing demand for IR training has led to the development of a range of training programs and university courses, the majority of which can not be accessed by learners in LMICs. This article reports on the evaluation of a massive open online course (MOOC) developed by the Special Programme for Research and Training in Tropical Diseases hosted by the World Health Organization on the topic of IR with a focus on infectious diseases of poverty. This study followed Kirkpatrick’s Model to evaluate training programs with a specific focus on post-training changes in behavior. Methods MOOC participants were invited to take part in an anonymous online survey examining their IR knowledge and how they applied it in their professional practice approximately 1-1.5 years after completing the MOOC. The survey contained 43 open-ended, multiple choice and Likert-type questions. Descriptive statistics were calculated for the quantitative data and responses to the open-ended questions were thematically coded. Results A total of 748 MOOC participants responded to the survey. The demographic profile of the survey respondents aligned with that of the MOOC participants, with nearly 70% of respondents originating from Africa. Responses to the quantitative and open-ended survey questions revealed that respondents’ IR knowledge had improved to a large extent as a result of the MOOC, and that they used the knowledge and skills gained in their professional lives frequently. Respondents most often cited changes in their conceptual understanding of IR and understanding of the research process as substantial areas of change influenced by participating in the MOOC. Conclusions These findings indicate that the MOOC was successful in targeting learners from LMICs, in strengthening their IR knowledge and in contributing to their ability to apply it in their professional practice. The utility of MOOCs for providing IR training to learners in LMICs, where implementation challenges are encountered often, makes this platform an ideal standalone learning tool or one that could be combined with other training formats.

scholarly journals EXAMINING THE DOUBLE BURDEN OF MALNUTRITION FOR PRESCHOOL CHILDREN AND WOMEN OF REPRODUCTIVE AGE IN LOW- AND MIDDLE-INCOME COUNTRIES: A SCOPING REVIEW PROTOCOL

2021 ◽  
Author(s):  
Jason Mulimba Were ◽  
SAVERIO STRANGES ◽  
Ishor Sharma ◽  
Juan-Camilo Vargas-Gonzalez ◽  
M. Karen Campbell
Keyword(s):  
Preschool Children ◽  
Scoping Review ◽  
Reproductive Age ◽  
World Health ◽  
Women Of Reproductive Age ◽  
Double Burden ◽  
Middle Income ◽  
Middle Income Countries ◽  
Double Burden Of Malnutrition ◽  
Low And Middle Income

Introduction: The majority of the populations in Low-and Middle-Income Countries (LMICs) are encountering the double burden of malnutrition (DBM): the coexistence of both undernutrition and overnutrition sequalae. With DBM being a new phenomenon in research, little is known about its etiology, operational definitions and risk factors influencing its manifestation. The proposed scoping review is aimed at mapping literature with regards to the DBM phenomenon among preschool children and women of reproductive age in LMICs who are among the most high-risk groups to encounter DBM. Methods: A comprehensive literature search will be conducted in the following electronic databases: MEDLINE, EMBASE, Scopus, CINAHL, LILACS and ProQuest Dissertations & Thesis Global. Additionally, searches in other government and institutional sources (World Health Organization website and university repositories) and forward and backward citation tracking of seminal articles will also be done. Two reviewers will independently conduct title and abstract screening and full text screening. Similarly, data extraction and coding will independently be done by two reviewers. Information extracted from included literature will be analysed qualitatively using thematic analysis approach and reported as per the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines. Ethics and Dissemination: Ethical approval is not required for this study because the review is based on literature from publicly available sources. The dissemination of our findings will be done through presentations in relevant conferences and publication in a peer-reviewed journal.

scholarly journals Community-based interventions for preventing COVID-19 transmission in low- and middle-income countries:  A systematic review

2020 ◽  
Author(s):  
Master R.O. Chisale ◽  
Sheena Ramazanu ◽  
Joseph Tsung-Shu Wu ◽  
Frank W. Sinyiza ◽  
Thokozani Bvumbwe ◽  
...  
Keyword(s):  
Systematic Review ◽  
World Health ◽  
Flow Diagram ◽  
Main Body ◽  
Community Based Interventions ◽  
Community Based ◽  
Middle Income ◽  
Factors Affecting ◽  
Middle Income Countries ◽  
Low And Middle Income

Abstract Background World Health Organisation (WHO) has approved and recommended several public health measures to halt the Coronavirus Disease 2019 (COVID-19) pandemic. The implementation of recommended interventions vary between higher income and Low and Middle-Income Countries (LMICs). The economical constraints within LMICs posed challenges in accessing resources for COVID-19 prevention. The study aimed to identify the workable community-based interventions being utilised in LMICs.Main body We applied systematic review approach for this study. Included articles were searched in eight online databases. The analysis was guided by the acceptable of best practice developed by the PROSPERO and COCHRANE for systematic search and selection of articles using pre-defined search terms. Furthermore, a PRISMA flow diagram was used to show the number of articles retrieved, retained, excluded with rationales given for every action. Studies conducted on community-based intervention for preventing COVID-19 and levels of knowledge, attitudes and practice (KAP) on community-based intervention for preventing COVID-19 regardless of the design were included. A mixed method appraisal tool (MMAT) was used to appraise studies.Six studies from LMICs were included for detail analysis after the systematic review screening process from 10,100 articles. The quality assessment using MMAT tool appraised these articles were all in highest quality. Among the six articles, 10 community-based interventions were implemented in LMICs. The three key workable and implemented interventions are: use of masks, social distance and hand wash. The review identified varying levels of KAP between LMICs and social-demographical factors affecting KAP in these settings.Conclusion This systematic review has identified the community-based interventions implemented in LMICs to prevent COVID-19 during the pandemic and key factors affecting the level of KAP among the population. This study re-affirms the importance of effective and suitable implementation of the identified interventions. More studies need to be conducted in LMICs to establish the effectiveness and adoption of the implemented and recommended interventions.

scholarly journals Psychotic experiences and subjective cognitive complaints among 224 842 people in 48 low- and middle-income countries

2018 ◽  
Vol 29 ◽  
Author(s):  
A. Koyanagi ◽  
B. Stubbs ◽  
E. Lara ◽  
N. Veronese ◽  
D. Vancampfort ◽  
...  
Keyword(s):  
Cognitive Deficits ◽  
Sleep Problems ◽  
World Health ◽  
Psychotic Experiences ◽  
Cognitive Complaints ◽  
World Health Survey ◽  
Middle Income ◽  
Middle Income Countries ◽  
Subjective Cognitive Complaints ◽  
Low And Middle Income

Abstract Aims Cognitive deficits are an important factor in the pathogenesis of psychosis. Subjective cognitive complaints (SCCs) are often considered to be a precursor of objective cognitive deficits, but there are no studies specifically on SCC and psychotic experiences (PE). Thus, we assessed the association between SCC and PE using data from 48 low- and middle-income countries. Methods Community-based cross-sectional data of the World Health Survey were analysed. Two questions on subjective memory and learning complaints in the past 30 days were used to create a SCC scale ranging from 0 to 10 with higher scores representing more severe SCC. The Composite International Diagnostic Interview was used to identify past 12-month PE. Multivariable logistic regression and mediation analyses were performed. Results The final sample consisted of 224 842 adults aged ⩾18 years [mean (SD) age 38.3 (16.0) years; 49.3% males]. After adjustment for sociodemographic factors, a one-unit increase in the SCC scale was associated with a 1.17 (95% CI 1.16–1.18) times higher odds for PE in the overall sample, with this association being more pronounced in younger individuals: age 18–44 years OR = 1.19 (95% CI 1.17–1.20); 45–64 years OR = 1.15 (95% CI 1.12–1.17); ⩾65 years OR = 1.14 (95% CI 1.09–1.19). Collectively, other mental health conditions (perceived stress, depression, anxiety, sleep problems) explained 43.4% of this association, and chronic physical conditions partially explained the association but to a lesser extent (11.8%). Conclusions SCC were associated with PE. Future longitudinal studies are needed to understand temporal associations and causal inferences, while the utility of SCC as a risk marker for psychosis especially for young adults should be scrutinised.

scholarly journals Stemming the tide: promoting mental health and preventing mental disorders in low- and middle-income countries

2015 ◽  
Vol 2 ◽  
Author(s):  
W. A. Tol
Keyword(s):  
Mental Health ◽  
Health Promotion ◽  
Mental Disorders ◽  
Global Mental Health ◽  
Action Plan ◽  
Mental Health Promotion ◽  
World Health ◽  
Middle Income ◽  
Middle Income Countries ◽  
Low And Middle Income

The first World Health Organization's global action plan for mental health recognizes the importance of mental health promotion and prevention of mental disorders, through the inclusion of one of four objectives focused on this crucial area of research and practice. This paper aims to provide an ‘aerial view’ of the field of mental health promotion and prevention of mental disorders with a focus on low- and middle-income countries. Starting with reasons why promotion and prevention need to take center stage in global mental health efforts, the paper provides a framework and four general principles to guide such efforts: a socio-ecological perspective (place); an inter-sectoral and interdisciplinary approach (collaboration), a developmental perspective (timing), and a participatory and empowerment approach (strengths), or PaCTS. Evidence-based examples of mental health promotion, universal, selective, and indicated prevention are described.

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